That's an interesting thought -- that because the past was absurd and lead to the normal now, that people expect the future to be less absurd than today. Another example of the absurd past -- my grandmother was cured of her "evil left-handedness" habits. I predict that similar social changes -- legalization of marijuana and equal rights for gays -- are now inevitable. In the future these will be seen as normal and expected and children will be shocked to learn that it was ever otherwise, even though now many people decry these as proof of society's immorality.

However, I think that social changes are a whole different category than technological changes (at least until we decide to edit human nature).