That also is a good reason not to do it. The mere chance of getting caught is probably not worth the risk, but if people are smart they never just hand in the paper as is. Only an idiot would hand it in that way. They should always change it and paraphrase the paper themselves after they get it, even mixing up the order things in it are written, how every sentence is structured and paraphrased and their order, and even where they got their sources also. It would be good to eliminate rare words that pop up in each paper unless that is a well-known term for the subject you are working on since common words would be harder to sift through. You should also not always have the same words in each sentence even when it is paraphrased. The length of the paper should be changed somewhat. Make it seem like something you would have written if you were going to write about the information, and if possible get your stuff from as many sources as possible. The advantage is the fact they don't have to do nearly the endless upon endless hours of research themselves not the fact all the work is done for them. The trouble with things that are only slightly similar is the fact that after thousands if not million of papers have been written on a subject there comes a point where it is hard not to have some things that are similar to what other people wrote even if it's totally inadvertent. Especially when a lot of the time there are a couple major sources for the work that almost everybody uses on some subjects. That is not to mention the fact that a program does the analysis to raise the first red flag on it not a person, and smart people can use that to their advantage to get around it. It would be harder to get away with something like this as the subject you discuss gets more and more unique. So for high-end classis it probably shouldn’t be something you should do, besides you should know the material anyhow and if you don’t it will show up in one way or another someplace else, like when you have to take a test. It is more useful for the multitude of minor garbage courses they force you to take where you really don’t have time to study them, and where the knowledge you could gain probably won’t be of any use to you afterwards. Personally, I don’t condone it, but if somebody is pushed to the breaking point, and has to chose the fact their GPA is going to get destroyed, thus effecting their future life, by a couple of idiotic courses that have nothing to do with what they want to learn, the fact they would do worse in their main courses because they have to divert attention away from it, or cheating I can almost see why some people decide to cheat.