"You are the main thread" — parallel agent mindset for AI-assisted work¶
Insight: With AI agents, the opportunity cost of idle time changes from (cost × 1) to (cost × 1) + (cost × N) — every idle moment now represents not just wasted personal time but all the parallel processes that could be delivering value. The practitioner's role shifts to CPU scheduler: queue tasks, context-switch efficiently, never let cores idle. Attention becomes the bottleneck, not execution capacity.