Which it? it has several ways to get interpreted factually incomplete in every reality present.
how, why, what, where, when, who. You always compare each part against the whole results arrived so far. 4 previous generation gaps existed prior to the arrival of each great great grandchild born this rotation of the planet every reproduction added is never the same as anyone prior but every future replacement is total sum of its conceived parts so far when occupying time each rotation arriving next with this universal location perpetually balancing uniquely here details have never been the same twice historically each rotation.
Now let us analys history as defined by theories and theologies suggesting living is larger than specifically timed part this rotation. Every reality is governed by reasonable doubt, rationing information as comparing human behavior between siblings each generation ancestral lineages expand numbers occupying time this rotation.
then everything is never same results twice each next rotation due to evolving doesn't exceed adapting as displaced as ancestrally positioned universally here as each rotation's numbers reduce global population to natural disasters and human self destruction of each others ancestral lineages.