20-minute video. I know, I know. Today’s Saturday, so what the hell.

It’s an incredibly impassioned and moving talk Dean Kamen gave in 2009 at a TED spinoff called TEDMED. Yeah, Kamen is the Segway guy, but that’s pretty much the least interesting thing about him. His latest project is developing fully articulated artificial arms for the more than 1600 soldiers who’ve come back from our various Middle East adventures missing the ones they left home with.

The demos are astonishing. You’ll want to set aside the time to watch this.