Communicating The Relevance of Human Evolution

This weekend I'm at a fantastic working group sponsored by NESCent :

http://www.nescent.org/cal/calendar_detail.php?id=1128

I'm taking lots of notes, and will share the outcomes and goals afterwards. While I'm here, I'm curious:

What was your "Aha" moment related to understanding that humans evolve? Or, did you never have a single moment?