On my desks there are other computers, and most are Dell, but indeed I don't care, as long as they can calculate. You know, this is an attitude that I have generally: for example, I have two cars, but I don't care, as long as I can drive safely. I don't care about their color, their brand, their power, etc. Sometimes, I need them, and they have to work. It's only a question of use. For my clothes, the same, and also for my laboratory, etc. On the other hand, intellectually, I am completely different, and here elegance and beauty are most important for me.