You mean full-fledged programmable quantum computer? Or just quantum supremacy for some narrow application?

Let me end by sticking my neck out. If hardware progress continues at the rate we’ve seen for the past year or two, then I find it hard to understand why we won’t have useful fault-tolerant QCs within the next decade. (And now to retreat my neck a bit: the “if” clause in that sentence is important and non-removable!)

Interesting. I wish I understood the implications of this.