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https://www.wsj.com/articles/what-good-comes-from-pretending-11674167436 Doll Garden Set

Psychologist Alison Gopnik explores new discoveries in the science of human nature. Read previous columns here.

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Truck Toy Remote Control This copy is for your personal, non-commercial use only. Distribution and use of this material are governed by our Subscriber Agreement and by copyright law. For non-personal use or to order multiple copies, please contact Dow Jones Reprints at 1-800-843-0008 or visit www.djreprints.com.