Not predicting the computer revolution, and specifically the calculator revolution, is not their fault.

It's like complaining that you were taught how to ride a horse, but it's 1921 now and NOBODY in New York City rides horses!!!

I absolutely have done long division, when a calc wasn't handy - back when that was possible.

This was in the 1990s so calculators were common. I was born at the worst time for math education, when calculators and Computer Algebra Systems were becoming common but math education hadn't adapted yet.

OK, valid point then.

Teachers are reactive, and slowly so, to changes in societal needs.