I don't remember where but I heard a story from someone in Crick and Watson's lab who said Crick would casually take LSD like people smoked cigarettes or drank coffee. It's not out of the question that someone in the medicine/chemistry field would have early access to the latest and greatest drugs.

What a shame that a great original thinker like Mullis ends up with dementia. It's crazy that solving aging isn't a #1 international priority.