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by perl4ever 2435 days ago
It reminds me of how gas stations generally having the same prices can be interpreted in two ways:

1) Competition is almost perfect, so they are forced to sell at the market price.

2) Competition is almost non-existent, so they are forced to sell at the monopoly price agreed upon.

As far as the questions people debate about upbringing and resources, wouldn't (identical) twin studies be the way to go if you really want to know?