Variation in human interaction has been posited as a central factor in social adaptations and the evolution of human institutions. Such variation appears to have decreased over time as modern society has become more dense and face-to-face interaction has decreased. The consequences of this decrease in variation may result in reduced social innovation and personal satisfactions, producing a variety of pathological conditions detrimental to social evolution. The role of new computer technologies like AI may accelerate these detrimental factors or produce new avenues for variation. Where such variation can come from and its likely effects on individual happiness and social evolution is discussed.