Good thing AI is advancing.

With UBI it won't be expensive anymore. So much of the economy is simply extractive, most people's jobs are really already highly algorithmic and involve much less "thinking" than they think. Being able to sit around and think has often been a historical luxury - of the elite or those lucky enough to be subsidized by them. I suppose the common (as they all were) man of prehistory also had more time to think, which was doubtless the germ of humanity's religious and speculative impulses. But they also had to contend with a brutal world where death was around every corner.

The economy doesn't want you to think. Knowledge workers really have far too high an opinion of themselves in this regard. Your "thinking" was merely more instrumentally useful than the alternatives. Most of us have done very well while inventing nothing. But an even better day dawns.

When humans don't have to rely on their own labor to survive, more humans will think. The opportunity to afford to indulge your curiosity as if you were among the wealthy and privileged. A society that can afford the Enlightenment and its myriad avenues at scale. What else will there be to do?

This is one possibility, but it is not a given one. Being able to think will require capital. The whole problem here is will your thinking be worth anything and how will you feed yourself until the point it is.