Agreed; even further, the presence of even a small number of interrupts can disrupt the extended focus and context-building that are required to solve gnarly pr

Agreed; even further, the presence of even a small number of interrupts can disrupt the extended focus and context-building that are required to solve gnarly problems. See also pg's famous "Maker's schedule" post: http://www.paulgraham.com/makersschedule.html http://www.paulgraham.com/makersschedule.html