>I was a deep learning skeptic. I doubted that you could get to intelligence by matrix multiplication for the same reason you can’t get to the Moon by piling up chairs I've always been fascinated by this example. I've also heard it referred to as climbing a tree won't get you to the Moon. Because, for some reason, people think that's an argument against the possibility of getting to the Moon when it's actually a prof…
Interesting insight. For me, the (tree) analogy is that of an illusion of progress: while the treetop is closer than the ground, there is no tree that can ever be tall enough to get the rest of the way. So, it isn't supposed to be used to say "you can't do it at all", just "you can't do it like that ". But metaphors get mixed as soon as they leave the bottle of text and enter the cocktail shaker of other people's min…
And I'm of two minds on this, because I find that to be a respectable position, and in fact, for this reason, I hope you show up to continue debates on this because your voice would be helpful and counteracting what I believe is the less reasonable position. Depending on how long you've been following debates on the topic, which have raged from essentially the 1950s through now, I would guesstimate that "you literally can never get to the moon" has at least at times enjoyed dominance as the majority position, and when not the majority position, is at least credited as being a respectable one.
And even in this dressed up reasonable version, it still feels wrong to me in an important way: if you did have a tree that was 328,900 miles tall, you could reach the Moon. There are so many opportunities along the way to mentally short circuit, and slip into practical considerations and lose sight of the principle. Of course no such tree exists, but it has critically illustrated that the entirety of the space from here to there is in principle traversable, and it's the insight into this principle that ultimately will get us from here to there.
It does mean you need to shift your focus of research from arborism to jet propulsion, and that is the important point made by your version of this argument. But it amounts to joining the 'arborists' in championing the possibility of getting there rather than being a skeptic of the possibility, and I feel like most people making this point imagine themselves to be taking the sides of the skeptic.