This is a linkpost for https://www.youtube.com/watch?v=3XoSqI1dZag
Will MacAskill opens EA Global: San Francisco 2015 with an introduction to effective altruism, why it matters, and the virtues and the history of EA.
In the future, we may post a transcript for this talk, but we haven't created one yet. If you'd like to create a transcript for this talk, contact Aaron Gertler — he can help you get started.