The Solo Conductor1The Coordination Tax: Why Splitting Work Has a CostWatch2Context Is the Bottleneck: Cognitive Load, Flow, and the Cost of Hand-offsWatch3What AI Assistants Actually Change: Compressing the Build-Test-Refactor LoopWatch4The Single-Conductor Model: When One Engineer End-to-End WinsWatch5Where Collaboration Still Wins: Limits, Risks, and a Decision FrameworkWatch