Yeah, dropping a seed in and growing a chair very quickly sounds like it is in the same ballpark, or at least further along the spectrum of efficient computation. That seed (program) would very tricky to produce, though. Contrary to the current practice of writing programs relatively easily, but the machines to run them are incredibly complex, both to run and to manufacture. With the seed, though, the machine would be nature, 1=1.

I agree that there is no need to bring quantum computing into the discussions, but it is higher on the efficient computing scale. It also requires a lot of effort to come up with programs that make sense, and they use more of natural phenomena (superposition, entanglement, etc) compared to classical computers. It’s something to look at for inspiration, at least?