Interesting study on the human brain's apparent ability to handle two cognitive tasks at a time, but no more:
http://news.yahoo.com/s/livescience/201 ... ingsatonce
This has interesting correlations to MA concepts, particularly in our bodies' responses to attack sequences. It also explains why our parents, when we were kids, gave us only two choices of what to wear or have for lunch. But why the count of three to quit pulling the cat's tail??