I came across the following article about the Myth of Multi-tasking in which it says:
“Workers distracted by e-mail and phone calls suffer a fall in IQ more than twice that found in marijuana smokers.”
So there you have it. Actually, I commend that you take the time (don’t multi-task) and read the complete article, which simply shows how humans can’t improve their productivity by multi-tasking. In fact they make it infinitely worse.
To me the rest of the world seems to be chanting “multi-task, multi-task” but the real heroes are those that step back and say “No, I need to concentrate on one thing at a time”. They may suffer ridicule but I bet they get more done than most people.
CIAOPS 