[gigq]

In pomodoro if you get interrupted to the point where you need to stop what you are working on you are supposed to stop the timer and start over when you can.

It forces you to make sure interruptions are actually worth dealing with vs putting them off till after the timer is up.

[artifaxx]

Good point, but by itself restarting the timer isn't much of a deterrent (at least to me). It makes me wonder if a better incentive might exist so that you can pause the timer but with a weightier tradeoff.