Old Textbooks?

[Ratfus]

True, there are some educational texts from 50, 100, or more years ago which are still extremely relevant.
Oh, nice!

It really depends upon the subject matter, but generally, textbooks do become dated. C++ is always getting new headers and the built in functions are constantly changing. In addition, even somewhat lower level math classes are much different than they used to be in the past. For example, calculating decimals from a square-root was much more difficult, without a calculator. You would need to use some pretty hard-hitting calculus to do said calculation (I think). Instead, the book would probably tell you to use a chart, which is likely not near as accurate as the calculator. While this difference is minor, without even picking a textbook up, it came to my mind.

Plus, wouldn't you rather have a digital textbook, than one that occupies space and adds clutter? Reason a lot of traditional publishing companies are perishing.