Like fingerprint fingerprinting?

no. fingerprinting is like denying a kid at a carnival ride with a height check.

what this thread is about is denying a kid a kindergarten spot because the dna shows their height will never get them a basketball college scholarship.

I'm very glad this wasn't productised before my in-laws were my in-laws

Your example doesn’t make any sense, because they could do it right now: most of the kids are never going to get a basketball college scholarship, everyone knows it, including schools, and they don’t care

It's an example of a thing that doesn't make any sense.

And people are made to care about things that don't actually make any sense all the time, you just gotta set up the incentives just right.