Children, in particular, are driven to create—if we just nudge them in that direction. They thrive in a world stocked with raw materials. But too often, and with the best of intentions, we fill their world with technology instead—devices that actually ask very little of them. A cheap electronic keyboard makes a few monotonous sounds, while an expensive one promises to make all kinds of sounds, from trumpets to marimbas to organs. But actually, neither the cheap keyboard nor the expensive one has anything like the depth and range of possibility of an acoustic piano—or a trumpet or a marimba (if
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