Mark Pincus (@markpinc) is the founder of Zynga and the author of "Life at the Speed of Play: Launch Products People Love", where he distills the product philosophy and founder playbook he developed across five companies. In this episode of Main Function with @garrytan, Mark reflects on building through three platform shifts: the web, social networking, and now AI. He shares his "Proven, Better, New" framework for product development, explains how founders can recognize real product-market…