??? most of us have a lot more than 100 hours of practice at things like this. Probably "some practice" means roughly the secondary background most people have

??? most of us have a lot more than 100 hours of practice at things like this. Probably "some practice" means roughly the secondary background most people have, then undergraduate plus a couple of years of industry work? If we're thinking about what human activity it will or can displace, it's probably unfair to compare it a seasoned doctorate. But it's also probably unfair to compare it to a kid with a few months of music lessons, too.