To play is experiment: “What happens if I do this? What would happen if we did that? What if…?”

Play, which I would define as anything we do simply for the joy of doing rather than as a means to an end – whether it’s flying a kite or listening to music or kicking around a football – might seem like a non-essential activity. Often it is treated that way. But in fact play is essential in many ways. Stuart Brown, the founder of the National Inst

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