Seventy-five percent of the total value of US companies that have floated since 1995 has been created by venture-backed firms, including Alphabet, Facebook, and countless others. But how did an obscure investment strategy become the engine of modern innovation and where might it go next? Sebastian Mallaby, author of an excellent new book, The Power Law: Venture Capital and the Making of the New Future, joins Azeem Azhar to discuss the history (and future) of venture capital.