You must face the fact that yours is the last generation of homo sapiens. As to the nature of that change, we can tell you very little. All we have discovered is that it starts with a single individual—always a child—and then spreads explosively, like the formation of crystals around the first nucleus in a saturated solution. Adults will not be affected, for their minds are already set in an unalterable mould.

In a few years it will all be over, and the human race will have divided in twain. There is no way back, and no future for the world you know. All the hopes and dreams of your race are ended now. You have given birth to your successors, and it is your tragedy that you will never understand them…

The resonance of “Oh! You Pretty Things” comes from how it uses these Nietzschean SF trappings as a metaphor for how a generation regards its successor with longing, fear and resentment (never more so than with the so-called Greatest Generation and their children the Boomers), or, even closer to home, how a parent can regard his or her children. Once you become a parent, you lose precedence in your own life—your own needs and desires are shunted aside, and you spend years as servant and guide to your replacement, who will go on to have richer experiences and greater opportunities than you ever had (that’s if you’re lucky). More bluntly, once you reproduce, your genetic purpose is fulfilled and all that remains is age, redundancy and death.