Behavioural science is not physics. Some signals are well-evidenced and consistent across cultures. Others are suggestive at best. Each entry in SIGNAL is marked with a reliability rating from one to three dots.
SUGGESTIVE
Observed but not consistent. Treat as a question, not an answer.
CONSISTENT
Reliable across most contexts when clustered with other signals.
ROBUST
Well-evidenced, cross-cultural, hard to fake under load.
A single signal is never proof. Read the rules before you read anyone.