Synesthesia

I've got a big meeting and dinner for work today. I'm still having lots of trouble sleeping, so hopefully I don't stuff any of it up due to tiredness!

In the meantime, I read this great (not new) Scientific American article about synesthesia - the condition in which senses are blended. I knew about synesthesia already; what interested me was that cool experiments have been conducted to prove that this is a real condition.

Real nerds will know all about this already. For everyone else, it's here.