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Joshua Carpentier, an employee at the time at a start-up named Essential, works in the playground area at the offices of technology incubator Playground Global in Palo Alto, Calif., on August 16, 2018. Playground funds and supports start-ups developing new technology, with a focus on artificial intelligence. Carpentier says, “I always made a point of going down the slide once a day. It was a good reminder to have fun and never take what you do too seriously.”

Joshua Carpentier, an employee at the time at a start-up named Essential, works in the playground area at the offices of technology incubator Playground Global in Palo Alto, Calif., on August 16, 2018. Playground funds and supports start-ups developing new technology, with a focus on artificial intelligence. Carpentier says, “I always made a point of going down the slide once a day. It was a good reminder to have fun and never take what you do too seriously.”