Most people are not prepared to have their minds changed, and I think they know in their hearts that other people are just the same, and one of the reasons people become angry when they argue is that they realize just that, as they trot out their excuses.
Iain BanksI still find it hard to understand that anyone could argue that you can't have machines that exhibit consciousness.
Iain Banks...[Changers] were a threat to identity, a challenge to the individualism even of those they were never likely to impersonate. It had nothing to do with souls or physical or spiritual possession; it was, as the Idirans well understood, the behavouristic copying of another which revolted. Individuality, the thing which most humans held more precious than anything else about themselves, was somehow cheapened by the ease with which a Changer could ignore it as a limitation and use it as a disguise.
Iain Banks