Here's a bunch of people practising a new set of behavioural norms. Apparently it didn't work because a lot of them got sick. That's the conclusion. You don't necessarily know why it happened. But you start there.
-- Kary Mullis
   
Kary Mullis   Name:
Kary Mullis
Type:
Scientist
Nationality:
American
Birth:
December 28, 1944
https://www.nutquote.com/quote/Kary_Mullis