> A good precedent is mechanized agriculture. When machines effectively replaced most humans in agriculture, unemployment did not rise to 90%.

I don't consider this a good precedent to the AI situation at all.

When this happened, humans went off and started doing what we now consider "knowledge work" (well, after a brief stint in factory work, where they also got displaced by automation). They escaped massive unemployment by being smarter than the tractors and mechanical looms. But how do they escape AI job loss when AI becomes smarter than the average human? or smarter than the smartest human?

In prior displacements humans moved up the stack. There is no longer room for them at higher levels of the stack if AI beats them at cognitive labor.