Diagnose an AI takeoff miss by tracing process causes rather than stopping at model error.
AI missed 420 linear feet of firestopping at shaft walls in a bid takeoff. Five Whys: symptom -> process cause -> control Stopping at "the AI missed it" feels satisfying but produces no new control. The next estimate can fail the same way. Why 1 Why was firestopping missing? The AI did not identify shaft-wall penetration scope. This names the failure mode without assuming the root cause. Why 2 Why did it not identify that scope? The relevant detail was on LS-602, which was not included in the upload. The problem starts moving from model output to source selection. Why…
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