Also
√1 = 2
√1 = ±1
The question is how we should extrapolate, and in particular if we should extrapolate faster than experts currently predict. You would need to show that Willow represents unusually fast progress relative to expert predictions. It's not enough to say that it seems very impressive.
I don't see how your first bullet point is much evidence for the second, unless you have reason to believe that the Willow chip has a level of performance much greater than experts predicted at this point in time.
I think the basic reason that it's hard to make an interesting QCA using this definition is that it's hard to make a reversible CA. Reversible cellular automata are typically made using block-partitioning or a second-order method. The (classical) laws of physics also seem to have a flavor more similar to these than a GoL-style CA, in that they have independent position and velocity coordinates which each determine the time evolution of the other.
Yeah I definitely agree you should start learning as young as possible. I think I would usually advise a young person starting out to learn general math/CS stuff and do AI safety on the side, since there's way more high-quality knowledge in those fields. Although "just dive in to AI" seems to have worked out well for some people like Chris Olah, and timelines are plausibly pretty short so ¯\_(ツ)_/¯
People asked for a citation so here's one: https://www.google.com/url?sa=t&source=web&rct=j&opi=89978449&url=https://www.kellogg.northwestern.edu/faculty/jones-ben/htm/age%2520and%2520scientific%2520genius.pdf&ved=2ahUKEwiJjr7b8O-JAxUVOFkFHfrHBMEQFnoECD0QAQ&sqi=2&usg=AOvVaw0HF9-Ta_IR74M8df7Av6Qe
Although my belief was more based on anecdotal knowledge of the history of science. Looking up people at random: Einstein's annus mirabilis was at 26; Cantor invented set theory at 29; Hamilton discovered Hamiltonian mechanics at 28; Newton invented calculus at 24. Hmmm I guess this makes it seem more like early 20s - 30. Either way 25 is definitely in peak range, and 18 typically too young(although people have made great discoveries by 18, like Galois. But he likely would have been more productive later had he lived past 20)
It sounds pretty implausible to me, intellectual productivity is usually at its peak from mid-20s to mid-30s(for high fluid-intelligence fields like math and physics)
Confused as to why this is so heavily downvoted.
Liked the post btw!