Tracy Kidder and Paul English, the author and subject of "A Truck Full of Money: One Man's Quest to Recover From Great Success," talk with Recode's Kara Swisher about English's dual life as a tech entrepreneur and philanthropist. English co-founded Kayak and, after selling it to Priceline, started another travel company called Lola. For Kidder, "Truck" is a return to tech several decades after his seminal book "The Soul of a New Machine." They discuss the challenges faced by entrepreneurs, the future of technologies like artificial intelligence and whether some forms of mental illness can be good for a tech CEO.

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