The fields each question kind's answer carries — the only ones a condition may read after
decisions.<node>.<question>. Reading any other field would be undefined, which a comparison
turns into a silent false; the validator refuses it at submit instead.
The fields each question kind's answer carries — the only ones a condition may read after
decisions.<node>.<question>. Reading any other field would beundefined, which a comparison turns into a silentfalse; the validator refuses it at submit instead.