Status: IN
Solutions employ selective defense rather than universal validation: they invest in conditions that improve efficiency (early exit, short-circuit) and defaults that encode domain knowledge (Counter zero-default, sentinel initialization), while deliberately omitting input validation — defense serves optimization, not safety.
Conditions and defaults are both present but serve optimization not validation — the pattern is deliberate selectivity, not absence of defensive thinking
Depends on (SL): selective-condition-checking-not-absent, defaults-encode-domain-knowledge-at-every-layer