@ Pstlpker: I love facts like that. Thanks for posting.
I don't do much idle puffing while doing something else. I tend to set the time aside for smoking a pipe with a cup of strong black coffee, tasty adult beverage, iced tea, juice or just good ol' iced water. I love to walk and smoke, but Nova Scotia rarely provides you with a mild, dry and wind free day for such activities. Maybe I should get a wind cap or something. The one exception would be computer aided art. When I am manipulating photos and drawings at the computer I thoroughly enjoy smoking a pipe. Some how I am able to deeply concentrate on both at the same time. I have also been known to read while smoking, but I find there are times when the book demands my attention and the pipe is put down or when the pipe demands attention and the book is put down.