When Square co-founder Jim McKelvey went looking for role models, he found that entrepreneurs, unlike businessmen, are in short supply. In his new book, “The Innovation Stack: Building an Unbeatable Business One Crazy Idea at a Time," McKelvey explores how people with big ideas and a lot of bravery can solve big problems and build new companies. In this conversation, McKelvey discusses his book with Sarah Fenske and shares his thoughts on how the coronavirus pandemic could change the status quo.