Quote:
Originally Posted by Kali Yuga
Well...
For some subjects, the material does need to be constantly updated -- particularly hard and social sciences. Unless you're teaching at St. John's College, you might not want a physics textbook that is more than 2 years old.
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Why not? One of the nice things about physics is that it doesn't change. We do keep learning more and more, so some of the upper level physics classes and more specific classes need to have constantly upgraded texts, but I know from my school most of the 100 and 200 level classes would not need new books every year or two and those are the classes that have the most students in them. By locking down those books (and similar 100-200 level textbooks) the strain of paying for textbooks could be greatly reduced for many students.