In Tyler Kepner's blog post for the New York Times (!) has a quote from Ed Wade, regarding the Astros' approach to rebuilding:
"The eventual goal is to make sure that our core nucleus is coming from within, because that provides not only the strength from a competitive standpoint but also long-term stability. That gives you the opportunity then to supplement or augment what you’ve already got. There’s no magic to this. It’s dogged, determined scouting, and it’s the commitment Drayton has made to allow us to strengthen our scouting budget and do things on the player-development side that we need to do."
So, Keith Law, try not to put the sins of Tim Purpura on Ed Wade's shoulders.