In modern society we’re all over-worked and over-loaded with information and tasks and to-dos and obligations. Nowhere is this more apparent than working in a startup where you are definitionally under-resourced and trying to make big accomplishments in compressed periods of time.
That’s why focus is critical. Saying “no” often to people who want to divert you from your mission becomes obligatory if you want to make progress. Modern-society is also littered with over-networkers and over-introducers and professional conference attendees.