Fight fire with fire. It takes a thief to catch a thief. To defeat your enemy, know and become your enemy.

Across the long sweep of history, our ancestors have greatly changed. Animals to primates to foragers to farmers to the industrialists of today. Across these many ages, we’ve greatly changed our environments, habits, styles of thinking, and priorities. During the ages of humanity, this has led to increasing “alienation”, as our worlds drift increasingly far from the worlds in which human nature was formed.

Someday we may become expansive aliens who rapidly spread life and civilization throughout a vast volume, stopping only perhaps when we meet other expansive aliens (in perhaps a few hundred million years). But we are far from up to that task now, and to reach that level we must probably pass through several more ages. Ages with big changes to our environments, habits, styles of thinking, and priorities. (Perhaps the next age would be an “age of em”.)

These changes will induce even greater alienation, at least as long as human nature doesn’t change greatly. And even if our descendants manage to change human nature, to make their new worlds seem more natural to them, that very prospect may horrify the residents of some prior ages. They may see even modest changes a loss of “humanity” due to many specific value changes. And so they may seek to prevent such new ages.

And this, I expect, is one of the greatest obstacles to our descendants becoming expansionist, and taking their place among the great alien civilizations who fill the universe with life and thereafter set its destinies. Some particular age, which could only have existed because many prior ages diminished and give birth to new different ages, “will stand athwart history, yelling ‘Stop!’”.

The ability to do this will be greatly aided by a world government, both in mood and in implementation. Which part of why I fear such a government. Let each age instead “diminish, and go into the West“, giving birth to differing descendant ages, so that we can help fill the cosmos with life, with “descendants as numerous as the stars in the sky“.

Added 9am: To make the matter more concrete, if they had understood the actual consequences, should pre-human primates have wanted to prevent the rise of humans? Should hyper-egalitarian, leisurely, and promiscuous foragers have wanted to prevent the rise of farmers,  with their hard work, war, inequality, slaves, and marriage? Should strongly religious, nationalistic and pro-marriage farmers have wanted to prevent the rise of industrialists who abandon such things? Should we want to prevent an age of em?

Added 7Apr: In four Twitter polls, I asked if the people of various eras would, according to their values, want to prevent successor ages. Results: 2-1 majorities think forager & farmer values would lead them to prevent following (farmer & industry) eras, even as majorities think primate & industry era values would not lead them to prevent following (human & em) eras. This seems to be overall pretty bad news for the prospect of there being many future eras once eras can coordinate to prevent successor eras.