So you're supposed to give the infants plenty of tummy time. This lets them work their neck muscles, learn the crawling start position, and generally work themselves into a completely frustrated state. They start off holding their head up and looking around but eventually wear out and end up face down in the carpet. Luke was never a fan of tummy time, and Silas can only take so much himself.

Above is Silas closing out his tummy time along with Luke's pretty dead-on impression of Silas. Ask Luke to "do Silas's tummy time" and he does a face-plant. Ah, to be on the other side.

Picture taken August 13, 2005.