Social mores change with time, like fashion - who knows where it might all end up? I especially like the idea that waste, impoliteness and overpopulation become "abominations," although I'm not sure recycling one's aunt will ever truly catch on.
Jasper FfordeJourneys up the Metaphoric River are hugely enjoyable and highly recommended. Since every genre is nourished by its heady waters, a paddle steamer can take even the most walk-shy tourists to their chosen destination. As a bonus, there is traditionally at least one murder on board each trip--a "consideration" to the head steward will ensure that it is not you.
Jasper Fforde