def open.of
import ezx@1.11.0.0/src/tool/plan.bend as Planimport Base
import ezx@1.11.0.0/src/tool/world.bend as TW
376# whether a question is still open
377def open.of(got: TW.Heard) -> Bool:
378 match got:
379 case TW.Open{}:
380 True{}
381 case TW.Heard{_a}:
382 False{}