Group immunity (psychology)

Group immunity (not to be confused with medical group immunity) is where herd psychology of a given group allow immunity to be mitigated to other members. For example, when individuals learn of new ways to identify threats, that identification is often transferred to the rest of the group via social dissemination.

Usage
Group immunity is useful in that it allows only one individual capable of learning to perform a smart cow problem to teach the rest on how to be immune to particular threats, which allows for resource conservation.

This wikia would be an example of group immunity because it teaches individuals skills that enable them to identify and counteract threats.

Usage can be in a variety of forms, from publicly teaching individuals how to spot particular threats, to repetition of particular points so it becomes learned, to introduction of threats that allow individuals to learn for themselves as to what happens. Even informing one other individual will likely confer group immunity as information disseminates amongst the group.