I typically like the most scientific ones rather than the touchly-feely ones. There was one about stock market crashes which I found really interesting . here i

I typically like the most scientific ones rather than the touchly-feely ones. There was one about stock market crashes which I found really interesting . here it is http://www.ted.com/talks/didier_sornette_how_we_can_predict_the_next_financial_crisis?language=en http://www.ted.com/talks/didier_sornette_how_we_can_predict_...