Search Models

After completeing the search steps and looking back on what we have already looked at and actually taking part in this one, really has me looking at the models more closely. They are all very similiar and almsot makes you wonder why there are so many. For example Kuhlthua's ISP steps are very similiar to the W's, it jsut uses different terms for the headings. It does make me wonder if you are looking more at either the "typical" reserach paper vs. a more personal reason, why would you need a different approach, why cna't you just use the same one?