How long is a piece of paper?

How long is a piece of paper?

Conventional wisdom has it that this can be done only eight times - because the doubled and re-doubled paper quickly becomes too thick. I suppose that I, like you, have reassured myself that while it was theoretically possible to fold it any number of times, practically, there had to be a limit because of this increasing thickness, which grows at the same power rate as the number of folds. But that's where we are both wrong, according to a student named Britney Gallivan.

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