> If the expectation is that AI is going to replace "knowledge workers" then the limit would be a darn perfect drawing. We are nowhere close to that.

What knowledge workers do you know that have excellent drawing skills? I worked in a design agency and for a couple of years, each week me and a few other people would attempt to sketch a member of our group: one person would be the model and sit still, and everyone else would draw her/him.

Let me tell you, if producing a convincing portrait was a prerequisite for being a knowledge worker, there would be 99% fewer knowledge workers.