00:00If you make a copy of a page, then copy that copy again, and keep repeating it over and over,
00:07Each version looks almost the same, but gets slightly blurrier every time.
00:13Now imagine that page is your DNA, and every time a cell divides, it has to reprint that page,
00:20but it's copying from the last copy, not the original.
00:24So small smudges and missing details start to build up, until the copies become harder to read,
00:31and the cells stop working the way they should.
00:35Now this slow breakdown is part of what causes aging, and eventually death.
