If an AI can do "most economically valuable jobs" retraining won't help. Unless you want to retrain for something that is not economically valuable enough to spend compute on it, and has having a human body as a non-negotiable prerequisite.
I also aspire(d) to be a physics teacher, but I'm pessimistic about it. Things like khan academy already make "teaching" obsolete, imagine pairing that with an GPT93 agent. 24/7 interactive learning.
All the research I've seen around MOOCs and online only learning is that it's pretty tough for people to stick at, and only 5-10% of people ever complete a course. I just can't see that putting people in front of a computer to do this sort of thing is a good strategy for everyone.
From my experience - that's mostly because courses are useless for career. So attending them is an optional, low priority activity.
If you could actually get a respectable degree or skills on a CV that matter for anything other than junior-most positions (if at all), you would see higher completion rate.
The quality of material itself is often pretty good. That varies from course to course of course, but I must say I started understanding electronics only after an edx course despite having it in my university.
but if the cost of doing so is so much less than the in-person experience, then it will become the norm, while the in-person experience becomes relegated to the wealthy like those who can afford private colleges today. And not that many professors will be needed, so good luck!
