See also: college admissions. (No, that kid probably didn't do that volunteering activity because they wanted to help people, but because they were told it was a checklist item, as they were coached through college admissions. And they probably didn't learn anything, and they were coached on what to say about that in the essay. And, normally, actually productive volunteering probably wouldn't have looked like each one of those kids starting their own duplicate initiative so each could spin it as demonstrating leadership. And it's more an option for kids from families well-off enough that the kids didn't have to work jobs that would contribute better to their household income or college expenses. And don't get me started on how the well-to-do decided that "travel" would be a plus on applications.)

Not to mention, you'd have to have a precise and well defined notion of what "analytical hobbies" are. Preferably one that doesn't carry an inherent classist[1] (and maybe even racist or sexist) bias. That part alone seems pretty tough, forget the actual definition part.

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[0]: https://en.wikipedia.org/wiki/Eight-legged_essay

[1]: https://hbr.org/2016/12/research-how-subtle-class-cues-can-b...