Requirements are more useful when every line says how well you actually know it.

SpecSprout gives each atomic requirement an evidence state, owner, lifecycle stage and validation context.

Evidence states

Confirmed is usable supported definition. Partial has a real direction but incomplete detail. Deferred explicitly assigns the final value to a qualified party. Inferred is plausible but unconfirmed. Missing means unspecified.

Why it matters

A project with many easy confirmed items can still be blocked by one critical safety, engineering or validation unknown. Hard readiness gates keep that visible.