Subliminal communication is part of

Subliminal communication is part of political propaganda.

It works by planting messages below the threshold of conscious awareness so that they influence attitudes without the audience noticing them.

Because propaganda seeks to shape opinion and feeling, often covertly, subliminal cues become a tool within it.

Government notification is an open, official announcement meant to be clearly seen and understood, the opposite of a hidden, below-awareness message.

Legal documentation must be explicit, precise and on the record, so it cannot rely on concealed subliminal signals.

Research reports aim at transparent, verifiable presentation of findings, which again is inconsistent with covert subliminal messaging.