@Fil Albuquerque,
No...I can't see what statistical speculation has to do with it. "Sameness" and "difference" are defined functionally, not physically. Trivially
any two things are both similar and different. Trivially they are similar because they are objects of a single comparison, and they are different because there are two of them.
Heidegger's description of "things ready to hand" and "present at hand" as evoked by a
Dasein (a human engaged in the praxis of living) is the primary experientail norm. That is not to say that scientific contemplation of things
qua "objects" cannnot be dealt with, but as
secondary levels of task operations. Anthropocentric "at handedness" for Heidegger is primary for "thinghood". That gives some insight into cultural classifications of (say) divisions of nutritious material into "food" and "non-food" (e.g. halal). "Things" are "what fit the bill" and their apparent permanence is essentially suggested by the abstract permanence of the
words in our (human) cultures.