Funny thing is, a "perfect and noiseless" analog computer is actually more powerful than a digital quantum computer. It is just that you can not make a noiseles

Funny thing is, a "perfect and noiseless" analog computer is actually more powerful than a digital quantum computer. It is just that you can not make a noiseless analog computer -- we know how to perform "error correction" only on digital computers. Basically, in our history we have: - real noisy analog computers which are easiest to build, fast for their restricted small problems, but they are not programmable and they are not scalable (because the moment they become "big", the noise becomes too problematic and swamps the results) - error-corrected digital computers that are programmable and scalable - today we have small, noisy, quantum hardware that is halfway between a quantum analog computer (i.e. a fun physics experiment) and some actual digital quantum computing machine. Great engineering achievement, but not yet what was promised by the field - hopefully, soon enough we will have scalable error-corrected "digital" quantum computers. They will be programmable and error-corrected which is the big distinction between them and a fun single-purpose physics experiment