“which hated Saxon’s approach”
They hated it because it worked. If something works, you don’t need to change it, especially a subject like math, which is static. It means you can use the textbook for as many years as it remains physically intact.
Harcourt needs “inovation” and “change” so they can sell new books.
Harcourt needs “inovation” and “change” so they can sell new books.”
Precisely, and the ed industry doesn’t care if they work or not. In fact, failure is an opportunity to sell new, “innovative” books.