Meaningful here means, you have set out to measure something well defined, that is measurable, and you have succeeded in creating something with a sufficient SN

Meaningful here means, you have set out to measure something well defined, that is measurable, and you have succeeded in creating something with a sufficient SNR to inform sound decisions. Not that it is meaningful in a moral sense. Yes, this is a contrived hypothetical. I'm not stating this is how GPA works, I'm asking whether that would be acceptable. I'm asking you to suspend disbelief so we can have a discussion. I can see that isn't something you are willing to do, so I bid you a good day.