CONCEPT
The Purpose Bottleneck
The structural shift — diagnosed through Allen's framework applied to the AI age — from execution as the constraint on productivity to purposeful selection as the constraint, relocating the cognitive scarcity from the runway to the upper horizons of focus.
The purpose bottleneck names the central structural thesis of this book: that AI has shifted the constraint on productive work from execution capacity (which the tools have made abundant) to purposeful selection (which remains scarce). For twenty-five years GTD was calibrated to manage an execution bottleneck — the gap between having commitments and acting on them. The methodology optimized throughput through that gap with ruthless efficiency. In the AI age, the execution gap has collapsed for a significant class of work, and the scarcity has migrated upward to the question Allen's upper horizons of focus were designed to address: what deserves to exist at all? The bottleneck is now purpose, and the components of GTD that practitioners historically skipped have become the components the new constraint requires.
In The You On AI Field Guide
The concept generalizes from the specific phenomenology Segal documented in You On AI — the experience of AI-augmented