[berntb]

On one hand -- sure, I've sadly forgotten most of the math I ever learned.

But on the other hand, no. I can bounce around modelling with basic data structures (hashes, arrays, structs/objects etc) in my head like a good juggler can treat 3 balls.

I think that is normal for quite a large subset of developer work. I assume there will be some jobs that won't need those data structures, but can't think of any. (Graphics and game developers would remember more math, of course.)

The description in the GP sounds more like the (probably false) stories about the Japanese English education: People with a vocabulary of 40K words that are unable to order coffee or talk about the weather.