No
Say no, build slack.
Slack is absence of binding constraints on behavior.
Value it. Guard it. Spend it only when Worth It. If you lose it, fight to get it back.
Slack gives you space to notice/reflect on subtle things
A little inefficiency is wonderful
The secret to doing good research is always to be a little underemployed. You waste years by not being able to waste hours.
People think focus means saying yes to the thing you’ve got to focus on. But that’s not what it means at all. It means saying no to the hundred other good ideas that there are. You have to pick carefully.