Do you really want two guys who only just have the barest grasp of orbital mechanics explaining it to Dan Rykart
Dan and Kerbal would be some deer in the headlights shit.
Vinny and Alex would be trying to do delta-v calculations and Dan would be all "What is a cornucopia, anyway? Is there really a place I can go and buy a big horn looking thing stuffed with food? They don't sell that at Wal Mart! But it's all vegetables anyway, gross. Vegetables are like soccer, weak and European. No cool normal guys like Kurt Angle eat vegetables."