Comment by tbrownaw

If the tax man can't see it, it doesn't exist.

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Scenario A: Max and Alex are a couple and have kids. Max stays home with them, and Alex has a job with a coworker named Avery.

Scenario B: Max and Alex are a couple and have kids. They both work, and hire Avery to watch the kids.

The same total work gets done by the same group of people in both cases, but the second measures as "better" for "the economy".