I checked a book out of my grade school library, entitled "Algebra".

The next year in jr high 7th grade, they taught us algebra, but I had already seen the second order polynomial.

There is another book "Everything I needed to know, I learned in Kindergarten"

I have designed high performance electronics for the up link from Air Force One to a satellite using only first year college calculus.

There are 2.5 million college freshmen. Probably 1,000,000 of them are going to study calculus.

That represents 1,000,000 first year calculus books dumped on the used book market every year.