I think this post has got it wrong. It should be "Simpson, WTF?" Harking back to last year Jenny was training hard and running badly - not close to qualifying for the Olympic final, regressing in her career. This year she's gone back to her college coach and turned it all around. We know she has ok but not great 800 meter speed (Cain is faster), but she's still a good finisher. So she's crafted a race trajectory that fits her abilities, and trains for that trajectory. Control the race from the start, but don't dawdle, save enough to finish well. Every race since this spring in Des Moines has shown a disciplined, dominant racing style. And think about what happened in Monaco DL - she led the Americans to 4 of the top 5 places in the 1500. Perhaps there's something to emulate here for some of our runners, something other than "sit and kick" (not saying that tactic isn't appropriate for some runners like, perhaps, Morgan Uceny). As for Cain, she's got to find, and train for, a trajectory that doesn't lose contact with the leaders at the 1K mark. Mary said as much in her post race interview. But as Simpson has shown, the optimal training and racing style can be elusive.