Paul,

There is also another issue that seems to be overlooked, people create their own disruption. When I wrote about Gloria Mark's finding on working spheres ( http://nuit-blanche.blogspot.com/2006/07/designing-collabora... ) I was surprised of that finding as it would seem counterproductive to the need to having to load up the "code" in the brain's RAM. Another explanation is that what she described is a typical cubicle/large organization workflow that would be counterproduictive to the Hacker's brain (replace hacker by researcher and you have the same symptoms).

Igor.