Six task categories from AB's 90-day audit, read through three measurement lenses: raw session count (throughput), weighted-proxy volume (attention estimate), and real token share (cost measurement). The top two categories sit in an HITL band where AI drives and human oversees; the bottom four sit in an AITL band where human drives and AI assists. Where two lenses align the story holds; where they diverge, one method needs review. Aggregating them into a single 'how much AI' number destroys that signal. Caveat: tokens measured for 30 of 93 sessions.
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