And what people do before the new jobs show up.

Well in the Industrial Revolution, the no-longer-necessary skilled craftsman became miserable, poorly paid cogs in service of their new automatic controllers. So a lot of us have that to look forward to.

Personally, I’ve switched back to the track I was on in my twenties: I spent the day doing moderately interesting work in a skilled trade, periodically having to haul 80lb-90lb steel machine parts up two flights of stairs in an un-air-conditioned, 100 degree manufacturing facility wearing heavy protective clothes and tools. I’ve worked in blue collar jobs before so I’m used to it, but I’ve seen a lot of developers say they’re going to be electricians or something. Good fucking luck! I’d conservatively estimate that 90% of developers I worked with are too soft, either emotionally or physically, to complete the first week of a years-long trade apprenticeship. The starting salary is only marginally better than working at Walgreens, and you’re expected to do a shitload of grunt work that is usually done by 20-year-olds. I foresee the entry-level retail, DoorDash, uber, instacart, et al scenes getting a whole lot nerdier over the next few years.

They use AI to change their jobs into new kind of jobs already. Some old jobs will disappear, some new jobs will appear, and most old jobs will stay. But if you think your job is among those threatened, you should have started adapting already at least 1-2 years ago.