The Games Industry is by nature a very international one and without due consideration the cultural backgrounds of staff can be a project killer. Unfortunately, judging colleagues (as odd, weird, unacceptable, uncivilised, etc.) is what we do instinctively. Unfortunately, being judged is also what we personally dislike most. It can create very strong negative reactions that most of the time will never be shared in the open. This can be killing your projects slowly, including the ones with the best people.