As the environment changes the concepts we use to describe it must also change. We need to forget some concepts entirely.* (Things like spirits, ghosts, slaves?) In the absence of forgetting concepts are modified by averaging over lots of additional experiences.** I.e., big data.
* See my blog of 28 Oct. 2018.
** See for example my original paper on A.s.a. H, Trans. Kan. Acad. Sci., vol. 109, No. 3/4, 2006.