... test blind, right.

But it had reached my other colleagues, as I understood afterwards.

So in spring twenty twenty-three, I'm teaching Calculus two, so that second semester calculus course at Berkeley.

I had something between twelve and fourteen hundred students in two classes, so a huge number of students.

And for the first time, I noticed that about a third of them were disengaged with the class after week two.

They would not come to lecture.

There would be missed quiz here, not submitted homework there.

Right.