This is the one thing that should be made out and out illegal -- version churning without a fundamental reason. Inclusive of: (1) altering problem sets or numb

This is the one thing that should be made out and out illegal -- version churning without a fundamental reason. Inclusive of: (1) altering problem sets or numbering, (2) reordering chapters, (3) organizing chapters. Where if any of the above are done, a free mapping must be available on the internet. I presume there are actual university guidelines prohibiting using older editions (i.e. ones the official college bookstore couldn't buy in bulk), but most professors just didn't seem to care (in between everything else they were juggling).