So also if the strangers introduced new and improved methods of agriculture, and food became abundant, it would then at once strike the most far-seeing and readily adaptable members of the community, both male and female, that there was no necessity for the destruction of their offspring; old men and women would begin seriously to object to being hastened to death when they realised that starvation did not necessarily stare them in the face if they survived to an extreme old age; the most stupid and hide-bound members of the community would still continue to sacrifice parents and offspring long after the necessity had ceased, under the influence of traditional bias; many persons would be in a state of much moral doubt as to which course of action to pursue, the old or the new; and bitter conflict might rage in the community on all these points.

Were the strangers to bring with them telescopes, looking through which it might at once clearly be seen that an eclipse of the sun was caused merely by the moon's passing over its face, the more intelligent members of the community would at once come to the conclusion that the insect was not the cause of eclipses, would cease to regard it as a god, and might even kill it; the more stupid and immobile section of the community might refuse to look through the telescope, or looking might refuse to see that it was the moon which caused the eclipse, and their deep-seated reverence for the insect, which was the growth of ages, would lead them to regard as impious those individuals who denied its godhead, and might even lead to the physical destruction of the first unbelievers.

The society, once so homogeneous and co-ordinated in all its parts, would become at once a society rent by moral and social problems; and endless suffering must arise to individuals in the attempt to co-ordinate the ideals, manners, and institutions of the society to the new conditions! There might be immense gain in many directions; lives otherwise sacrificed would be spared, a higher and more satisfactory stage of existence might be entered on; but the disco-ordination and struggle would be inevitable until the society had established an equilibrium between its knowledge, its material conditions, and its social, sexual, and religious ideals and institutions.
An analogous condition, but of a far more complex kind, exists at the present day in our own societies.

Our material environment differs in every respect from that of our grandparents, and bears little or no resemblance to that of a few centuries ago.

Here and there, even in our civilised societies in remote agricultural districts, the old social conditions may remain partly undisturbed; but throughout the bulk of our societies the substitution of mechanical for hand-labour, the wide diffusion of knowledge through the always increasing cheap printing-press; the rapidly increasing gathering of human creatures into vast cities, where not merely thousands but millions of individuals are collected together under physical and mental conditions of life which invert every social condition of the past; the increasingly rapid means of locomotion; the increasing intercourse between distant races and lands, brought about by rapid means of intercommunication, widening and changing in every direction the human horizon--all these produce a society, so complex and so rapidly altering, that social co-ordination between all its parts is impossible; and social unrest, and the strife of ideals of faiths, of institutions, and consequent human suffering is inevitable.
If the ancient guns and agricultural implements which our fathers taught us to use are valueless in the hands of their descendants, if the samplers our mothers worked and the stockings they knitted are become superfluous through the action of the modern loom, yet more are their social institutions, faiths, and manners of life become daily and increasingly unfitted to our use; and friction and suffering inevitable, especially for the most advanced and modified individuals in our societies.