I buy this, in a general sense. If you're able to fully understand the problem and plan out the solution before starting to make changes you should be able to p

I buy this, in a general sense. If you're able to fully understand the problem and plan out the solution before starting to make changes you should be able to pause and pick up again more easily than if you are designing on the fly. But of course all that planning requires thought, and thought requires time and the freedom to concentrate, and "ding" there's an email in the inbox.