Maybe about 40 years ago computers started to replace humans in earnest doing calculus, and replaced 20-30 years ago. I mean, computer algebra systems only rea

Maybe about 40 years ago computers started to replace humans in earnest doing calculus, and replaced 20-30 years ago. I mean, computer algebra systems only really came into their own in the 80's (even if there was some work in the 60's) and uptake took awhile.