[Jeff Chandler]

This way of reading things, for instance, can be used when students learn matrices in multivariable calculus in high school.

Because so many American pupils take calculus in high school.

[17th Miss Regt]

And calculus in high school is single variable, not multivariable. It is a rare high school student who knows what a partial derivative is, much less be able to use it intelligently.

The Communist Core swamis have lost touch with reality. They want students to be able to think abstractly but don't care to teach them prime factorization of numbers, how to do operations with fractions or even make them learn their addition and multiplication tables. Idiocy only academics could believe.