Crowdsourcing vs. Collaboration: Which Yields Superior Results?

Lately I feel like I’m trapped in an endless loop of a certain Steve Ballmer moment, except the refrain is “crowdsourcing, crowdsourcing” on one hand, and “collaboration, collaboration” on the other. It seems everyone has jumped aboard either the crowdsourcing or the collaboration train. Call me a fence-rider, but I’m staying firmly on the platform.