Programming together in a group is a bit like living together in the same house or sharing the same apartment. It can be fun if all work together. It can be frustrating and annoying, too. Others will get upset if you don’t clean up the kitchen (and do not leave clean code), mess things up or if you change their things. It works best if everyone owns his own space, i.e. everyone has his own room(s), owned only by himself, where the others are not allowed to change things. If you are lucky, then the others may show you their rooms occasionally. Some shared regions like the main entrance, can be public, though. Basically, programming well with others is difficult, just like living together, because likes, tastes and preferences vary.
(The picture is from Flickr user Annette Bouvain and shows a flat share)
