Forgive my ignorance
But I thought useful quantum computers were still some ways off on the horizon, and were currently squarely in the realm of Mad Scientists. No? Or are these IBM machines still considered "experimental" and not really available to the general public? Or is it marketing hype? We had this story back in December https://www.theregister.co.uk/2018/12/06/quantum_computing_slow/ where Uncle Sam was saying quantum was still years away. I admit, I am a tad confused.