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Discover the truth behind the 'Industrial Gaps' in everyday tools that aren't flaws but features designed for precision. These calibrated fulcrums and high-pressure ports transform simple devices into powerful hydraulic solutions. Explore the 2026 Mechanical Meta and learn how to leverage these innovative designs for your projects. You won't believe the engineering insights revealed in this blueprint!
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00:00You've probably heard that when a burglar decides which house to target, they start by casing it.
00:06This means that they watch the owners, find out information about their routine, and determine the best time for entering
00:13their home.
00:13By the time they're ready to commit the crime, they already know for sure when there won't be anybody inside
00:19or when the owners will be distracted.
00:22One of the tricks thieves use to gather information about your routine is so simple that you may not even
00:28give it a second thought.
00:29But the next time you hear a quiet crackle under the sole of your shoe, stop and check what it
00:35was.
00:35The chances are high that you'll find yourself face-to-face with a crushed cookie.
00:40If that's the case, it's your clue that something has gone terribly wrong.
00:45The thing is, this is a rather effective tool criminals use to find out if you've left on a trip
00:50or when exactly you come home in the evening.
00:52A cookie is such an innocent object that people don't usually give it much thought, if they even notice it
00:58at all.
00:59You arrive home, step on the cookie, make it crumble, and automatically reveal all your secrets to burglars.
01:06They know for sure if the house is lived in and can also figure out the schedule of its owners.
01:11Things get even worse if you're away from home.
01:14The cookie under the doormat remains whole, thus alerting criminals that the house is perfect for a break-in.
01:20So, if you find some treats under your doormat, that's pretty bad news.
01:25Someone is interested in your house and watching it.
01:28It might be a good idea to notify the police or take some safety measures.
01:32Now, the ploy with a cookie is just one of the numerous tricks used by burglars.
01:37One more sign that can alert you to the fact that you're being watched is white pebbles left near the
01:43house or in the driveway.
01:44This means that a criminal has already visited your home and marked it as worth entering.
01:50Another reason why thieves may have left the pebbles is to indicate that your house stays empty during the day.
01:56So, if you're walking along the street and notice a USB flash drive sticking out of a curb or a
02:02wall, don't get confused.
02:03You have most likely stumbled across a dead drop.
02:07Despite its ominous name, this is a global art project that has borrowed some tricks from the world of spies
02:13and espionage.
02:14Lots of people who know about this project are happy to be able to put on their black coat and
02:19dark sunglasses
02:20and go to swap confidential information with others.
02:24The thing is that many decades ago, spies had their own ways to exchange secret materials.
02:29There was a live drop when spies met in person.
02:33But this was often extremely dangerous.
02:35That's why a dead drop system was invented.
02:38In this case, some loose bricks and a wall in an alleyway hid important documents that had to be picked
02:44up later.
02:45Nowadays, there are more than 1,500 dead drops all over the world.
02:49And the accumulated data on these flash drives reaches 10 terabytes.
02:54You can come across a dead drop on any continent you visit, except Antarctica.
02:58Maybe because there are not so many walls there.
03:01So, if you find one, what do you do with it?
03:04First of all, it's highly inadvisable to connect random USB flash drives to your computer.
03:10You never know what viruses are lurking there looking forward to destroying your hard drive content.
03:15And while risk is a part of the game, don't overdo it.
03:18If you're 100% sure that you want to play, secure your computer as well as you can, or even
03:25better.
03:26Secondly, you can't even guess what information will be waiting for you on a flash drive.
03:31Anyone can download videos, photos, or text files, and this has already led to several problems.
03:37Speaking of which, have you got a parcel with a USB stick in it?
03:41Whatever you decide to do with it, don't plug the flash drive in.
03:44Such cases have been more and more frequent in Australia.
03:48The police warn people that hackers have invented a new tactic.
03:52They drop unmarked memory sticks to letterboxes.
03:55It'll probably come as no surprise that these devices contain malware able to mess up your computer.
04:01They evidently rely on human curiosity, and, in all honesty, it pays off.
04:07People can't fight an inexplicable desire to check the contents of a mysterious gift.
04:12As a result, almost half of USB sticks received by post get plugged in.
04:18After that, people start having serious problems with their laptops and computers.
04:23For example, fraudulent media begins to stream service offers.
04:27Or computer viruses harm files and programs on a PC.
04:30So, no touching the free flash drive, okay?
04:34Now, you leave a shopping mall, your office, an airport, and go to the parking lot to find your car.
04:40You unlock it and put the key in the ignition.
04:43When you're about to start your vehicle and drive away, you see something strange on your windshield.
04:48Is that a $100 bill wrapped around your wiper?
04:52Oh, you could certainly find a way to spend this unexpected gift.
04:55But do you really think someone accidentally put money on your windshield and forgot all about it?
05:01But beware, this is nothing but a ruse.
05:04Because, as soon as you get out of your car to get a closer look at this mysterious banknote,
05:10the owner of the banknote will take action.
05:12They will get into your car and drive off at a record-breaking speed.
05:16Let's admit that no one would turn off their ignition and take their belongings with them
05:21if they got out of their car to check the windshield for a C-note.
05:24As a result, in under a minute, you'll lose your car, your wallet, and your documents,
05:29and you'll be left stranded in the parking lot.
05:32People have recently started to find some article of clothing, like a shirt, for instance,
05:37lying on their windshield or wrapped up in their wipers.
05:40If you ever happen to be one of these people, don't fall into this trap and don't try to remove
05:45the object.
05:46Just get in your car and drive away as fast as you can from the place you were parked.
05:50This seemingly misplaced garment is actually a new con being used by muggers and thieves.
05:56It works like this.
05:58If you see some random piece of clothing that prevents your wipers from moving or obscures your view,
06:03your first reaction will be to remove it, of course.
06:06But while you're distracted untying it or trying to get it off,
06:10the criminal has plenty of time to jump you.
06:13The most commonplace for this sort of scam is parking garages.
06:16They're usually badly lit and pretty deserted,
06:19which means there are few witnesses around and plenty of dark spaces for the attacker to lie in wait.
06:25Now, if one day you come home and notice some graffiti or markings on your door or house,
06:31call the police immediately.
06:32Even if it just looks like a teenage prank or a simple scratch,
06:36it's better to be safe than sorry,
06:39because burglars use certain marks to tell other criminals different things about your house.
06:44For example, something resembling a Roman numeral 2 means that the homeowners are rich,
06:50so the place is a great target.
06:52On the other hand, a crossed circle tells other burglars that there's nothing valuable to take from the house.
06:58Hmm, kind of makes you want to mark your own house like that.
07:01Now, a long horizontal rectangle divided into four parts means the place has a big aggressive guard dog.
07:07A triangle divided into two parts by a vertical line tells criminals to hit the place only at night,
07:14while a reversed one says that a house or apartment is free after dinner.
07:19And something looking like a combined A and K lets their fellow burglars know that the house is always full
07:25of people.
07:26Hey, did you know there's even a fraternity for burglars who love to steal desserts named Iota Grab a Pie?
07:33Sorry I made that up.
07:35A new trick being used by car thieves, and that's the trick with a coin.
07:39They slip it into the space between the door and the door handle.
07:43When a car owner thinks they've locked the door with a remote, the vehicle is, in fact, still open.
07:48The coin prevents the lock on one of the doors from working.
07:51As soon as the owner walks away from the car, the thief has no problems at all opening the door
07:57and driving away.
07:59Another trick.
07:59As soon as there's some public gathering, a big party, or even a busy day at the mall,
08:05car thieves make an announcement over the PA system that a particular car, chosen by them, of course,
08:10has blocked their vehicle in and they can't leave.
08:13As soon as the owner comes out to move his car, a group of guys start to act.
08:18They assume, and for good reason, that the person is carrying the key to his car.
08:24Have you ever wondered what these extra holes at the top of your running shoes are for?
08:29They're designed so that you can tie the shoes in multiple different ways.
08:33That's useful when you want to compensate for things such as a bad stride or even a damaged toe.
08:40Plus, you can change the look of your shoes the way you prefer.
08:45Many people use a dust jacket of their book as a book marker.
08:49No problem with that.
08:50It will save your book from bent page corners.
08:53But the primary purpose of a dust cover is to keep the book safe from distortions.
08:58For instance, if you spill juice or drop some of the food on your book while reading it.
09:04The tic-tac dispenser has this little groove on its top, so you can dispense only one tic-tac at
09:10a time.
09:11Even though, let's be honest here, nobody does that.
09:14Most of us just spill a whole bunch at once and then we wiggle all those extra tic-tacs back
09:19in.
09:21Those rubber bumps you see between the tire treads are there for your safety.
09:25The raised edges tell you what the minimum height of your tread is.
09:29If the bump and the edges are even, it's time for you to visit the tire shop as soon as
09:35possible.
09:35But if the bumps are well beneath the level of the edges, you're good to go.
09:41What about that black grating on the microwave window?
09:44It's something called a Faraday shield.
09:47And it's there to prevent microwaves from getting away and turning the entire room into a Faraday cage.
09:53If the microwaves escape, your meal won't cook properly either.
09:57So yep, the cage is not there to make it difficult for you to see your meal while it's cooking.
10:02It's keeping the electromagnetic energy inside.
10:07How about a wrench-compatible screwdriver?
10:10Cover your screwdriver with the end of your wrench and you can increase its torque.
10:14That's why the head of your screwdriver is designed the way it is.
10:17When you have odd angles, you can use this strategy.
10:22You've probably heard those myths, the blue side of the eraser can erase the pen.
10:27False.
10:28Its purpose is to erase a pencil.
10:30But in case you're writing something on heavier paper.
10:33The blue side can remove smudges you see after using the pink eraser too.
10:39Have you ever wondered why oranges in supermarkets mostly come in the red mesh bag?
10:45It's a trick to make this food look more orange and encourage you to make a purchase.
10:50An extra tip.
10:51Don't throw away the mesh bag.
10:53Tie it up so you can have a small pot scrubber to clean your sink, kitchen, appliances, and dishes.
11:01You can see golf balls don't have a perfectly round shape.
11:04Their surface is covered with many little dimples, something golf balls didn't always have.
11:10At one point, experienced golfers started noticing how through time,
11:14older balls with imperfections, such as nicks and bumps, could travel further.
11:20Such things create turbulence in the air around the golf ball, which eventually reduces drag.
11:26So, manufacturers started producing balls with dimples so they could go farther and faster.
11:34You might have noticed that sometimes there are ridges in toothpick tops.
11:38It's more hygienic because when you break that off, you can prop the toothpick up on it,
11:42and it won't touch anything.
11:46Another safety feature you'll find, this time in your car, is a tab on your rearview mirror.
11:53With it, you can change the position of the mirror, so you don't get blinded if there's a car behind
11:57you with its high beams on.
12:00So, this little tab helps you control the glare of lights coming from behind.
12:04This feature showed up in the 1930s, but in the early 1970s, it became a part of standard equipment in
12:11most trucks and cars.
12:14Do you see that tiny hole on your iPhone right next to the rear-facing camera?
12:18It's a microphone, and it's there so your phone can record sound as you turn your camera around.
12:26Some cables have a thick cylinder towards the end of the cord.
12:30It's called a ferrite core, or a choke.
12:33It's a magnetic iron oxide that stops high-frequency electromagnetic interference.
12:39For example, you know that annoying static noise you get if you bring your phone too close to a speaker?
12:45This interrupts your call, which is why cable cords with big cylinders are pretty useful, because they prevent these things.
12:53Do you know why nearly all luggage bags and backpacks have two zippers?
12:58It's way more convenient and easier to open in that way.
13:01But not just that, you can also lock these two zippers together to keep the stuff inside your bags safer.
13:09You know how toilets at public spots like malls have those big gaps at the bottom?
13:15It's primarily for better circulation of air.
13:18This type of door also makes it easier to clean the toilet or check if it's occupied if you're standing
13:23in line.
13:25Other than that, if you get stuck there and the lock gets broken, you still have a way to escape.
13:31You can just crawl out.
13:34Ever notice those plastic end caps on utility knives?
13:38And they also have scales on them, which indicates you may use them multiple times, but with sharp edges.
13:45You can separate the blades through these plastic end caps.
13:48Then, you can move the slider and bring the sharp blade to the front.
13:53If you've ever taken a moment to examine a regular grocery cart, especially their fold-out section,
13:59you probably noticed those metal loops jutting out.
14:02They're designed to protect the items you carry in your cart.
14:06You can use them to hang bags with soft items.
14:10You don't want to accidentally squish with heavier products, like bread,
14:14or easily breakable things, like eggs.
14:18Many coffee mugs come with curved notches on their bottom.
14:22When you're washing your mugs, put them against the rack at an angle in your dishwasher.
14:26This way, the water won't pool in there,
14:29so your favorite cup will be completely dry by the time you take it out of the dishwasher.
14:34If you're a McFlurry fan, you've probably noticed there's a square hole in the handle of the spoon.
14:41It's there so you can attach it to the special machine that mixes the ice cream and your favorite toppings
14:46together.
14:47The machine has a bar that slips into this square-shaped spoon and then thoroughly stirs it.
14:53And you get the spoon so they can minimize the mess during the process.
14:57Quite neat, wouldn't you say?
15:00A regular milk jug has a dent on one side.
15:04Some might see it as a random design decision, but a dent has several purposes.
15:10One of them is to get bigger if there's a gas buildup.
15:13This happens when your milk is spoiled.
15:16So you don't even have to try to check this out.
15:18Also, the dent is there so the jug doesn't burst if you accidentally drop it.
15:23The dent allows the expansion space that deals with the sudden pressure that happens when you drop the jug.
15:31Dental floss
15:32Sure, it's important for your dental health, and it's easy to assume what you do with it.
15:36But dental floss is great in the kitchen as well,
15:39because it's a very precise cake slicer, way better than a regular knife.
15:47Most kitchen shears have a serrated opening right there at the center where the blades and handles meet.
15:53It's something you can use to trim difficult herbs such as rosemary, thyme, or chives.
15:59Because of this opening, you don't need to pick the leaves off by hand, but de-stem them in one
16:04motion.
16:06The majority of gelatin containers or single-serving yogurts come with a tinfoil lid.
16:12And in most cases, you can use this covering as a disposable spoon.
16:17Just peel away the covering, and after a couple of simple folds,
16:20you'll have a perfect little spoon for your midday snack.
16:25Crackers have holes in them to stop them cracking and breaking during baking.
16:29If the holes weren't there, steam would build up inside the cracker and make it collapse.
16:35Take a look at a soda bottle, and you'll notice a disc inside the bottle cap.
16:40This helps seal in the liquid and the drink's fizz, stopping it from going flat.
16:45The long neck on your soda bottle is designed like that to encourage you to hold it there.
16:50That way, the heat from your hand will only warm that top bit of the bottle,
16:54instead of heating up your whole drink.
16:57It's always hard to see your food in the microwave because of that pesky black grate on the window.
17:03But it's there to stop harmful microwaves from escaping.
17:06Called the Faraday Shield, it protects you as well as ensures that your food cooks properly.
17:13Food items like chips come with about 43% nitrogen inside their package.
17:18It might seem like they sell you half a bag of air, but it's exactly the opposite.
17:23Oxygen, the gas we breathe, would react with the chips inside the bag and make them go rancid quickly.
17:29It's called oxidizing for a reason.
17:32Nitrogen, on the other hand, is an inert gas that helps keep the foodstuffs fresh
17:37and also protects them from breaking during transportation.
17:41A bag of chips that has this gas cushion lets you enjoy your crunchies without them turning to potato crumbs.
17:48Donuts have holes in them so that the inside and outside cook evenly.
17:53Before the holes were added, the inside would often be greasy and doughy while the outside was crisp.
18:00Margins on paper aren't for writing in dates and numbering lists.
18:04They were originally added to serve a protective function.
18:08Back in the day, rats used to be a pesky problem in people's homes, and paper was one of their
18:14favorite snacks.
18:15Margins were added as a safeguard so that the rats would nibble on blank paper,
18:20rather than taking a bite out of your important work.
18:23That hole in your hollow lollipop stick isn't to prevent choking should it ever be swallowed.
18:29It's actually there to keep the candy in place.
18:32Excess candy flows into the hollow tube, and the hole, which when it hardens, keeps the pop in place.
18:39If it was a smooth stick, the candy would slide off easily.
18:43Vacuums come with so many attachments, but do any of us really know what that one with long bristles is
18:49for?
18:50It's for dusting, and is perfect for cleaning framed art, blinds, and lampshades.
18:56What's the difference between a wooden hanger and a plastic one?
19:00Aside from helping keep your clothes in shape, cedar wood hangers also repel moths and bugs.
19:07Salt isn't just used for cooking.
19:09It can get rid of tough smells.
19:11Rubbing salt on your fingertips after chopping garlic should remove the smell.
19:16It also works on shoes.
19:18Toasters have a secret slide in the bottom that can be removed,
19:22so you can clean out all those annoying breadcrumbs.
19:25If you ever had problems with popping chocolates from the box,
19:29look at those little holes around them.
19:31They're there to help you.
19:33If you push a hole right next to the candy, it'll jump out easily.
19:37When you take a sip from a coffee cup with a lid, it decreases air pressure inside the cup,
19:43so air tries to get in.
19:45The tiny hole on the lid allows air to enter that way,
19:49so liquid can smoothly pour out the main hole.
19:53More on beverage lids.
19:55The small button on them let restaurant workers and customers, too, understand what's in a cup.
20:02Near each button, there's a name.
20:04Just look at which one is pushed down.
20:07The numbers on the fruit stickers tell you how exactly they were grown.
20:11If there are four digits and the first is four or three, the fruit has been sprayed with pesticides.
20:18If there are five digits and the first is nine, the fruit has been grown organically.
20:24If there are five digits and the first is eight, the fruit has been genetically modified.
20:31When you're on your way back to the car after bagging up everything you bought,
20:35use loops on a shopping cart to hang the bags.
20:39Now, softer items like bread, eggs, fruit and veggies won't get squashed by the heavier goods.
20:46If you don't have anyone to hold the other end of your tape measure when you try to measure something,
20:51tap a nail on it.
20:53Now, simply hook your tape on it using the tiny hole all tape measures have.
20:59The square-shaped spoon that goes with a McFlurry helps to mix the ice cream toppings through the dessert.
21:06The spoon hooks directly to a machine and spins around.
21:11Padlocks that are used outside quickly get out of order because of rain.
21:15See this little hole in the bottom?
21:17It's made for pouring engine oil inside.
21:20Do this and the key will again turn in the lock without any difficulty.
21:25You keep banging the bottom of a glass ketchup jar, but nothing's coming out.
21:31Here's a little tip.
21:32Turn your ketchup bottle at an angle and tap on the middle of the neck.
21:37In many fast food restaurants, customers fill tiny folded paper cups to get a portion of ketchup or mustard.
21:44Here's the news.
21:45The cups are supposed to unfold and turn into small paper platters to hold a great deal more sauce.
21:53That little hole on the handle of a pot or a frying pan isn't just for hanging them on the
21:58wall.
21:59During cooking, put the end of your utensil in the hole, and it'll be propped over the pot to save
22:05your kitchen from extra mess.
22:06The blue or any other dark color bristles on your toothbrush are meant to remind you when it's time to
22:13get a new one.
22:14If you see that bristles have become pale, change the toothbrush or its head.
22:19An extra hole at the upper part of the sink has multiple hidden functions.
22:24First, in case someone forgets to close the tap, the water won't overflow and the bathroom won't get flooded.
22:31Second, thanks to that hole, the water drains faster as it gives an escape for the air, helping the water
22:38flow down.
22:39Most metallic zippers have a hidden lock inside them to save you from awkward situations, such as an undone fly.
22:47Don't leave the zipper handle in an upward position.
22:50When you pull it downwards, it automatically locks.
22:53It's all thanks to those tiny grooves hidden underneath the handle.
22:58Spoiled milk emits gases, like most foods when they go off.
23:03A classic plastic milk jug has a concave shape on one side.
23:07So when the gases expand inside the jug, it expands too, and the concave shape curves out.
23:14Also, if you want to save some milk for later and freeze it, the jug will expand when the milk
23:19gets solid as well, occupying more space in a jug.
23:24Bath foam isn't only for fun or a nice smell.
23:27It also helps regulate the temperature.
23:30The bubbles keep the water hot, so you can enjoy a bath a bit longer.
23:34Anyway, it works for acrylic bathtubs only.
23:37Those made of metal lose heat really fast either way.
23:41Many cups and mugs have little grooves on the bottom on purpose.
23:46They're designed for washing machines.
23:48The grooves let the water flow and not spill over your feet when you take the cup out.
23:53Also, those grooves let the air flow so the cup doesn't crack even if the tea is scalding.
24:00A point on an ointment cap is there for a reason too.
24:04Most tubes are usually sealed with foil, and it's better to avoid opening it with fingers unless you're ready to
24:10say goodbye to your nails.
24:12A point easily opens even the most safely sealed tube.
24:17Escalator brushes aren't for keeping your shoes clean and polished.
24:21It might be tough to apply wax right on that brush while the escalator's on the move.
24:25It's for your safety.
24:26Brushes won't let you come close to the edge, so a long coat or boot-cut jeans won't end up
24:33in between the steps.
24:35All tic-tac containers are designed to dispense one tic-tac every time you open it.
24:41The lid has the same shape as the candy.
24:44Turn the container upside down, gently shake it, and slowly open it.
24:48You'll notice only one candy stuck between those lid grooves.
24:52So if you just open the container and shake it until five or even more candies fall into your mouth,
24:58it means you've been eating tic-tacs wrong all this time.
25:02The pom-pom on top of your beanie wasn't put there as a fashion accessory.
25:07The pom-pom was originally added to the hat to prevent sailors from banging their heads on the ceilings of
25:13the ships that were too low.
25:17That little yellow hook you can see from the airplane's window if you're sitting next to the wing is there
25:24to help you in case of an emergency landing.
25:27Inflatable slides can only be deployed from the emergency exit doors in the front and the tail of the plane.
25:33In the middle, the passengers would have to walk right out on the wing and get to the ground from
25:39there.
25:39But jumping from the plane wing isn't safe because it's just too high.
25:44And here's where those little yellow hooks come in handy.
25:47The flight attendants tie ropes from the doors and through the loops for the passengers to hold on to.
25:53This way, everyone can safely get to the ground without injuries.
25:57Now, you want to try to avoid cozying up under airplane blankets.
26:02Some airlines only wash them about once a month.
26:05Better use your own travel blanket, a scarf, or a jacket.
26:09And always remember to wear your shoes while walking around the plane.
26:13That carpet on the floor can't and won't be clean to perfection between flights.
26:17It's just too much time and effort for the cabin crew.
26:21The dirtiest place on a plane isn't the bathroom.
26:25It's your tray table.
26:26It has eight times more bacteria than an onboard toilet flush button.
26:32Now, in case of emergency, oxygen masks only have enough airflow to last for about 15 minutes.
26:39Luckily, it's just the amount of time a plane needs to find a suitable landing place
26:44or to at least descend to the altitude where people won't need oxygen masks anymore.
26:50You may wonder why you're asked to lift your seat back and close your tray table before takeoff and landing.
26:57But it's for your own safety.
26:59A reclined seat is comfy for you, but it makes it harder for the passenger behind you to get out
27:05of their seat,
27:05which is crucial in case of an emergency.
27:08The lower tray table is the same way.
27:11Only this time, it's you who won't be able to stand up fast enough if anything happens.
27:15Besides, the tray table prevents you from assuming the secure position in the event of an emergency landing.
27:22This position requires you to bend over in your seat, put your head between your knees,
27:27and cover the back of your head with your hands.
27:30Imagine doing that while your tray table is open.
27:34If you look around the cabin, you'll notice little black or red triangles around the midsection of the plane.
27:40These stickers let the flight attendants know where the airplane wings are located
27:45so they can immediately look out the right window to see if something is amiss outside.
27:51You shouldn't lower the window shades while taking off, taxiing, or landing for two reasons.
27:57First, the flight attendants must always be able to monitor the situation outside.
28:02And open shades help them with that, obviously.
28:05Second, if something's gone wrong on board the plane while it's on the ground, for example, a fire,
28:11the ground crews won't be able to see it and evaluate the situation before going in unless the windows are
28:18open.
28:19That tiny hole you see at the bottom of any airplane window isn't there to scare you nuts.
28:25In fact, it helps keep the pressure from the inside and the outside of the window equalized.
28:30The hole itself is only made in the second layer of glass, and there are three of them overall,
28:36which also helps with security, by the way.
28:38Even if the outer glass breaks, there will still be two more to keep you safe.
28:44Now, you might see flight attendants touching the overhead compartments while they're walking along the aisle,
28:50but that's not exactly what they do.
28:52Right beneath the compartments, there's usually a handrail that goes all the way through the cabin.
28:58So, you can also use this trick to stay firmer on your feet in the aisle.
29:03The pilots dim the lights in the cabin during nighttime, not for you to get cozy and sleepy.
29:09Our eyes have a hard time adjusting to darkness in the first few minutes of sudden lights out.
29:14And in the case of emergency, every second matters.
29:18So, the lights get dimmed to let you get used to darkness in case something happens and you have to
29:24act fast.
29:26Pay attention to the aisle floor, too.
29:28If there's an emergency landing at night, there will be two luminescent strips along the aisle showing you the way
29:35to the exit.
29:36Follow them to get safely out of the plane.
29:39Flight attendants also suggest counting the seats between you and the emergency exit once you're seated.
29:45This will help you navigate in case there's no other guidance available.
29:50If a lightning bolt hits the plane, the passengers won't feel it.
29:54The entire aircraft is covered with aluminum coating that conducts electrical current and doesn't let it inside.
30:01This protection is tested using a lightning simulator.
30:05Airplane windows are round because the air pressure is evenly distributed this way.
30:10If the plane's windows were square, strong air currents would accumulate in the corners of the windows, depressurizing the cabin.
30:18And that's bad.
30:20Don't think you become untouchable if you go to the airplane toilet.
30:24The bathroom door can be open from the outside.
30:28There's usually a small latch at the top of the door that allows cabin crew to get you out of
30:33there.
30:33It's useful for both getting to people doing something suspicious in the bathroom and helping those who don't feel well
30:41and, for example, collapsed while in the toilet.
30:44Yeah, let's avoid doing that.
30:47The plane's wings flash red and green lights at night to show the direction the plane is heading in.
30:53A green light is always on the right wing and a red one is on the left.
30:59Aircraft tires are designed to withstand four to five times more pressure than they actually experience upon landing.
31:06The wheel is more likely to brake than the tire.
31:10Pilots always have different meals.
31:13This is necessary to reduce the risk of food poisoning.
31:16The flight can still go well if one of the pilots has gone down because of a stale burrito, but
31:22not if it's both of them.
31:24And try not to both of you eat the fish.
31:28Some airlines don't allow pilots to have beards.
31:32Facial hair can prevent securely fitting the oxygen mask.
31:36And pilots must always remain conscious.
31:39The seats are blue in most aircraft because this color soothes people.
31:44It's also easy to keep clean.
31:47The rumbling noise you hear after boarding the plane is luggage being loaded on the plane.
31:53The compartment is right beneath the cabin, so it can sound quite loud sometimes.
31:59On most flights longer than seven or eight hours, pilots have access to a specially designed rest seat in or
32:06near the cockpit.
32:07Flight attendants typically have a section of the cabin reserved for them.
32:11And it's sometimes separated from the passenger areas.
32:15Some larger aircraft even feature private crew quarters above or below the main cabin.
32:22The wings of most passenger aircraft are located at the bottom of the plane.
32:26It's called a low wing.
32:28Firstly, if you install the engine under low wings, it'll be closer to the ground and easier to repair.
32:35Secondly, the wings will take on part of the shock in case of a hard landing.
32:39And if the plane falls into the water, then the wings become a life-saving pillow.
32:44By the way, a plane can stay afloat for 10 minutes to 60 hours.
32:48It all depends on the model of the plane, weather conditions, and pilot skills.
32:55Now, most airplanes are white because this color best reflects the sun rays and the aircraft body doesn't heat up
33:02as much.
33:03Also, the damage is best seen on white.
33:05And white paint is simply cheaper.
33:10Shoulder straps seem more secure than just a waist belt, but not in the case of planes.
33:15When the plane gets into turbulence, it's tossed a bit in the air.
33:19The waist belt will simply hold you in place in case of a more severe shape.
33:24Shoulder straps would require more space between the seats, and this is not justified on a plane.
33:30In a car, the impact is usually much stronger.
33:33So you need that shoulder strap not to whoosh through the windshield.
33:38Flight attendant seats do have passenger straps,
33:41but that's because they are much less comfortable than passenger ones.
33:45They're narrower and positioned facing the passengers.
33:49Flight attendants need extra protection simply not to fall off their seats if the plane shakes hard enough.
33:55Also, they have to help and direct people during potential evacuation.
33:59And for that, they need to be in top shape.
34:03Now, maybe you've noticed that you always enter the plane from its left side.
34:08Firstly, the captain usually sits on that side.
34:11This way, it's easier for the captain to align the plane with the terminal jet bridge.
34:16Also, the aircraft is fueled and loaded with the baggage on the right side.
34:21If passengers come from the left, the crew can do their job undisturbed.
34:28This way, we feel right.
34:29We'll talk to you soon.
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