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If You Fold A Paper In Half 103 Times It'll Get As Thick As The Universe

The myth: You can't fold a paper in half more than eight times.* 

The reality: Given a paper large enough—and enough energy—you can fold it as many times as you want. 

The problem: If you fold it 103 times, the thickness of your paper will be larger than the observable Universe: 93 billion light-years. Seriously.


The answer is simple: Exponential growth. The average paper thickness in 1/10th of a millimeter (0.0039 inches.) If you perfectly fold the paper in half, you will double its thickness. Things get interesting quickly.


Folding the paper in half a third time will get you about the thickness of a nail. Seven folds will be about the thickness of a notebook of 128 pages.



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