Not being able to think about two things at once means that we can’t truly “multitask” things that we need to think about. Instead, we cycle through tasks in quick succession. But be warned, there are costs. At each switch we risk losing our train of thought and even if we remain on track, it takes time to re-situate ourselves with where we were before the switch. The net effect is that it takes more time to multitask a set of actions than it does to do them sequentially. Aza’s Thoughts » You Can’t Multitask (via zenhabits)