I was on vacation when I heard that I was not selected to be Twitter’s next CEO (it was a joke application meant as a way to try to get an obscure bug fixed). Huge congrats to @Jack. He’s a great story of personal improvement. He was already diligent and design oriented when I worked with him in 2005. But the transformation into focused, product leader is amazing — especially his ability to tell the product and company story. Like many great people, he wasn’t born that way. Kudos to him for putting in the work.