Discriminating question
What it producesalso: L4 · tactical question · discriminator · kill shot · cheap kills · exploration · node typeA question written to eliminate hypotheses: at least half of the tactical questions must pit two or more rivals against each other.
Step 8 works by elimination over description, in three phases: the kill shot (which single experiment eliminates the most hypotheses at once), cheap kills, and exploration. Node types are discriminator question, model requirement, tool requirement, unknown exploration and validation question. Five cognitive modes drive generation: reductionist, constructivist, lateralist, comparative and temporal.