A couple I don't think I've watched yet...
[Gladwell]: I was recently asked to give a public lecture at the University of Pennsylvania on the subject of “proof.” My question is: How much proof do we need about the harmfulness of something before we act? I began with the strange history of how long it took for society to grasp the seriousness of black-lung disease, and then moved into an argument about the black-lung diseases of today.
Link to video
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Malcolm Gladwell in Conversation with Eleanor Wachtel
Link to video