Believing that other people are conscious doesn’t require any special selection pressure: it falls out of the general ability to understand their utterances as referring to something that’s “actually out there”, which is useful for other reasons. Also we seem to have a generalized adaptation that says “if all previously encountered instances possessed a certain trait, but this instance doesn’t, then begin doubting if this instance is genuine”.
Believing that other people are conscious doesn’t require any special selection pressure: it falls out of the general ability to understand their utterances as referring to something that’s “actually out there”, which is useful for other reasons. Also we seem to have a generalized adaptation that says “if all previously encountered instances possessed a certain trait, but this instance doesn’t, then begin doubting if this instance is genuine”.