A pairing Chase Hughes uses to explain extreme compliance: the life script is a person's learned internal moral compass (e.g., "don't kill people"); the ancestor script is an older, automatic, survival-driven response pattern that can override it under the right triggers. Hughes frames this not as a suspension of morality but as one automatic system being overridden by a more primal one.
Hughes uses the pairing to explain the Six Axis Model of Influence's Milgram case: authority and novelty (see The Five Authority Trip Wires) triggered an ancestor script that overrode participants' life script, driving them to believe they were shocking people to death despite an otherwise "rock solid" internal compass against killing.
Hughes ties the ancestor-script mechanism to a separate model — the FATE model (FATE Model (Focus, Authority, Tribe, Emotion)) — which maps a hierarchy of automatic responses humans (and most mammals) default to under ancestral triggers like authority and novelty. This source only references FATE in passing; the full method is covered in a dedicated Hughes video.