Stanford Business has put the footage of Jack Ma’s recent speech online. The Alibaba CEO raised eyebrows on both sides of the ocean when he says – very deliberately – that he was “very interested in Yahoo” during the talk. But the entire talk is worth a watch if you have an hour to spare. He talks with a lot of passion about the success of Alibaba, but also alludes their many mistakes and difficulties, including Taobao’s intellectual property challenges.