Next, the researchers probed how this learning mechanism works.

MSN: Goggle-wearing rats show link between learning, rewards

But doctors are plagued by avoidable failure and the medical profession as a whole has no reliable mechanism for learning from its mistakes.

ECONOMIST: Cutting down on errors

Professor Seth Grant, an expert in the molecular mechanism of learning and memory at Edinburgh University, told BBC News Online that PKM was a particular version of an enzyme called protein kinase C (PKC) that had long been implicated in learning.

BBC: Scientists boost memory power

Failure is actually the mechanism by which learning happens.

FORBES: The $100 Higher Education: Chris Guillebeau on Inexpensive Startups as Real-World Education