Unlike almost every other geek, I want only one monitor. When I sit down at a desk with a monitor, the laptop’s lid gets closed. For me, it works better to keep things simple. In fact, there’s usually only one window showing on my one monitor. I’ve found through a few months of experimentation that the fewer distractions I have visible, the better I’m able to focus. It seems obvious now that I write it out, but it was a hard thing to figure out in a culture of pervasive multitasking.