I call it Dewey’s rule, and it stands for the idea that parents should try to arrange things so that, on average, their children end up in the 30th percentile of stuff. If 10 kids in a community are eventually going to get a car, then your child should have the 7th nicest out of 10. Or if your children are in the 50th percentile on cars, then perhaps they should be 9th out of every 10 to get a smartphone. It’s just a rough average to shoot for, not a hard-and-fast every-time law. And different parents may find themselves in special circumstances or may not have enough willpower to wait beyond,
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