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What Jev is, what the three question types return, and how to ask so the answers hold.

Seven pages, each short, each with one fence that runs. Read them in order the first time; after that the Tools reference is where you will spend your time.

page	the one thing it settles
System One	a model that answers typed questions about one state with probabilities, and does not generate
Primitives	Noul, Choice, Score: when to use which, what each returns
State	strings, objects, arrays; backticked paths; structured instructions and criteria
Confidence	probabilities and the number derived from them; thresholds that scale with risk
Patterns	fan-out, confidence routing, composite scoring, intent routing, function calling
What not to ask	the jaggedness list for jev-1.13: what Jev reads wrong and what to do in code instead

Everything here paraphrases docs.typesafe.ai; each page names the source page it follows. Where a claim carries a number, it comes from that page or from Measured.

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