It's not a matter of the base material changing, it's a matter of how that material is presented and taught. When I keep hearing everyone claim that the way tha

It's not a matter of the base material changing, it's a matter of how that material is presented and taught. When I keep hearing everyone claim that the way that math is taught is terrible, I'm willing to believe that someone can write a better textbook. Granted this isn't actually being accomplished. The reason why new textbooks are needed is independent of why new textbooks are being bought. However, I feel that your argument "Subject X hasn't changed, so we shouldn't textbooks on X" is off target. Why are there new web frameworks keep coming out? Because this time, we're going to do it right.