Nassim gave this talk in April 2012 and if I am not mistaken it was the first official public introduction of the concept of Antifragile, however at the time Nassim had planned to call the book “Antifragility” and later changed it due to concerns from the publisher.
I love the introduction, asking the audience for the opposite of fragile. I have heard him do this a number of times when he first started introducing the idea, and everybody always says “robust”. The issue is now as the idea enters the common discourse he can no longer do this introduction. A good problem to have I guess.