Technology allows us to optimize around very narrow criteria. If we turn that optimization ability towards changing society. We can end up emphasizing one potential future, based around a narrow set of values over other potential futures with other values. Conceivably abandoning many long standing values regardless of how useful they are. This is analogous to the transit systems of many large cities, in particular the Bay Area, where all the lines stay together for awhile and it doesn't matter what value you emphasize, but introduce technology and suddenly optimizing one value over another results in radically different results.