I thought these "events" might be a test for the humans, a mass hallucination. It is strange that three civilisations should encounter each other at the same time like this.

It is difficult to alter one human characteristic without changing the whole person: difficult to change from male to female. Far more difficult to Improve a civilization by changing one characteristic of the humans, take away the ability to feel pain. Take away the whole basis of moral action and cooperation, by preventing babyeaters from eating babies. Would the superhappies really desire to make every one else just like them? Possibly, I think that is a morally poorer choice but making that choice is very common among humans.

But I cannot think of a *better* ending.