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September 2017
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Article: Five-Second Rule Explored

The Five-Second Rule Explored, or How Dirty Is That Bologna?

Accompanied by six graphs, two tables and equations whose terms include “bologna” and “carpet,” it’s a thorough microbiological study of the five-second rule: the idea that if you pick up a dropped piece of food before you can count to five, it’s O.K.

to eat it.

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