By Erin Allen & Sara E Walker A few weeks ago, we traveled to Denver to play in a roller derby bout against the Rocky Mountain Roller Girls Project Mayhem. Backtrack a little bit, and yes, we both joined the local roller derby league here in Durango -- the Durango Roller Girls. For those not in the know, we've both been playing flat track roller derby since 2010. The team was tough, and the bout was hard. However, it got us thinking about our human experiment and everything t