We need to be able to fail!! Start making better mistakes

This is a gripping video that, although it doesn't refer directly to education has huge implications with the way in which we think about and measure the effectiveness of what we and our learners do. If you are someone who uses and works with statistics and 'empirical evidence' this video is a must see.

The blurb from the site reads: "Economics writer Tim Harford studies complex systems -- and finds a surprising link among the successful ones: they were built through trial and error. In this sparkling talk from TEDGlobal 2011, he asks us to embrace our randomness and start making better mistakes."