I think of it like this imagine your sitting around a group of colleagues from work who you think are your friends. You're shooting the shit when all of a sudden you get this bright idea that will help the company hell it might even get you
promoted, naturally you decide to share it with your buddies except you gloss over the details only giving a rough sketch. You put together your project over a matter of weeks (or months if your lazy like me) and then present it to your supervisor. He takes a look at it tells you it's good and he'll pass it up. Later on the day he stops you to question you as to why one of your so called friends just presented an almost identical proposal to him and if you stole it from him. At this point you get heated and tell him there's no way you stole anything from anyone and that this project was your idea hell it's your baby. With a look of doubt he says he'll have to review both of them to see which one is better and that the one he chooses will be passed up. At this point you're left with two choices either let it go as is or do everything in your power to bring the other mofo down. I'd be willing to bet the vast majority of people would chose to bring that son of a bitch down. Can it be considered childish sure but there are times when you gotta throw civility out the window and go for it.