teacherman9000 Posted March 10, 2017 Posted March 10, 2017 Simple question: What do Penicillin, Velcro,Viagra and PI (Print Inversion, not the number) all have in common?
Daecon Posted March 16, 2017 Posted March 16, 2017 They were all originally designed to do something else before becoming famous for their more common usage?
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