00:00If you pushed the leaning tower of Pisa with enough force, could you actually straighten it out?
00:06Well, as the tower was being built, one side actually began to sink into the ground.
00:13So builders tried to fix it by making the upper floors taller on one side,
00:19adding a permanent curve to the top to even out the lopsided base.
00:24So if you forced the base upright today, the top would no longer be centered over it.
00:30The weight would hang off to the side and gravity could pull the whole thing down.
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