Well, see, publishing companies are smarter than us. While we think we're being smart by selling our books after we're done with them, they simple create another edition with NOTHING different except different grahpics, and the fact that the problems are completely changed with number and order - thus meaning you must get it.
Add to this the completely unexplainable behavior of colleges who constantly switch to the newer editions even though there's nothing (well, as nothing wrong as you can get with textbooks...) wrong with the existing one.
There must be some type of "extra" benefits from the publishing company for the guy in charge of switching to newer editions. Perhaps they share the same bed?
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Well, see, publishing companies are smarter than us. While we think we're being smart by selling our books after we're done with them, they simple create another edition with NOTHING different except different grahpics, and the fact that the problems are completely changed with number and order - thus meaning you must get it.
Add to this the completely unexplainable behavior of colleges who constantly switch to the newer editions even though there's nothing (well, as nothing wrong as you can get with textbooks...) wrong with the existing one.
There must be some type of "extra" benefits from the publishing company for the guy in charge of switching to newer editions. Perhaps they share the same bed?