ISTR someone saying that the most common words spoken prior to a breakthrough aren't "Eureka!" or "Aha!" but instead "That's strange..."

Coincidentally (or not) those also seem to be the words spoken during computer programming right before you figure out something you never understood before.

Often atrributed to Asimov, but it doesn't seem to have been him: https://quoteinvestigator.com/2015/03/02/eureka-funny/?amp=1