What inspired your 6 year old son to memorise 300 digits of pi?
If you're like Feynman's dad you can ignore the names and talk about relationships - "Why has that one got sharp teeth?"; "Why has that tree got big leaves?".
He also regularly asks me questions he's learned the answer to from videos, like "why isn't the District of Columbia a square?", "which countries in South America don't have oceanic coastlines?", and "what would happen if you tried to make Graham's Number but you used 2's instead of 3's?"
Sure.
To bring this back to the topic, though: yes, my son is an absolute genius when it comes to data. I'm not making it up to score internet points. I actually have a six year old who has legitimately reached 4096 in the game 2048, and who has a basic understanding of what a "limit" is, and who in the last week has really taken to fractals. That doesn't mean he's good at everything -- we're still working on pooping in the toilet, not talking in the middle of someone else's sentence, and not having a gigantic meltdown if his milk is in a green cup instead of a yellow cup.
Point being, it may initially seem weird that Bill Gates memorized license plates rather than car makes and models, but that may just be what his brain handles well.
I just highly doubt anyone who is so excited to return the conversation to their "genius" son. It's very https://www.reddit.com/r/iamverysmart/ .
This isn't Reddit. HN guidelines don't say "it's OK to be a jerk as long as you highly doubt someone". If you think I'm making stuff up about my son (who I'm very excited about because I'm a parent and that's how it works) to score internet points, the proper thing to do on HN is hold your tongue and not bother commenting, or use your downvotes once you've earned that right.