[eru]

For quantum computing to be impossible, basically all of quantum mechanics would have to be wrong.

There are enormous engineering challenges with quantum computing, but no fundamental challenges.

[mellosouls]

There are some who argue those engineering challenges make theoretical compliance moot:

https://spectrum.ieee.org/computing/hardware/the-case-agains...

(I've also just submitted that link to HN separately fwiw)

[Dylan16807]

So the argument is that the chance of having an error goes up exponentially as you add more qubits, 1:1 with the size of the problem state?

Well that's easy enough to understand, even though I have absolutely no idea if it's true or not.

[eru]

If the error necessarily goes up exponentially, and error correction or dampening can not possibly work, I would count that as new knowledge about the basics of quantum mechanics.

Basically, either quantum computing works or we'll learn a lot more about quantum mechanics we didn't already know.