There’s no lack of hype in the computer industry, although even I have to admit that sometimes the technology does catch up to the promises. Machine learning is a good example. Machine learning has been hyped since the 1950s, and has finally become generally useful in the last decade.
Quantum computing was proposed in the 1980s, but still isn’t practical, although that hasn’t dampened the hype. There are experimental quantum computers at a small number of research labs, and a few commercial quantum computers and quantum simulators produced by IBM and others, but even the commercial quantum computers still have