Principlev1PR-136
Establish an external measurement system for cognitive…
Establish an external measurement system for cognitive capacity because subjective assessment of performance degrades under the same depletion being measured.
Why This Is a Principle
Grounded in the Van Dongen parallel: memory of task duration is biased (Human memory of task duration is systematically biased…) and bias blind spot (Bias Blind Spot Asymmetry — cannot detect own biases while seeing others'). The 'attention debt' concept rests on the insight that depleted attention cannot accurately self-assess. The principle prescribes external measurement as the solution. Highly actionable.