Open GitHub. Twelve notifications. One is a bot. One is a thread from a week ago. You filter by "awaiting your review." Two results. But alice pushed fixes to that PR you reviewed on Monday. She just forgot to re-request.
Open Linear. Four tickets assigned. One has a comment you missed. Another has been "in progress" for a week — you forgot to update it when the PR merged.
Check Slack. Someone asked about your PR in a thread you didn't see.
Four platforms. Four inboxes. Four ideas of what's urgent. And you haven't written a line of code yet.