One of the favorite arguments for free software is that it avoids lock-in to a particular manufacturer’s products. Something similar happens due to choice of programming language, though, which accounts for the sometimes-baffling project rivalries in the free software world. While this may be a surprising result to end users, it makes a lot of sense if you think about how developers—especially free-software developers—work. Occasionally, you hear complaints about these “divisions” of the free software world, but is this really a bad thing?