The terminology we use internally is “individual” and “group” contribution skills. A group contributor’s job is to help other people be more productive, and in doing that you sacrifice some of your own productivity. It’s a higher stress job and you get interrupted a lot more. People will do that for one project. They’ll say, “I really want to do this game!” and everyone will say “Ha ha ha, you’re stuck with it now.” At the end of the project they’re like, “Gee, that was really interesting but I want to go back and work individually on the next thing.” Some of the highest compensated people at the company are relatively pure individual contributors.