It is in the sense of being unpredictable (assuming person not deliberately cheating). There certainly some aspect of rolling that may reduce randomness (uneven

It is in the sense of being unpredictable (assuming person not deliberately cheating). There certainly some aspect of rolling that may reduce randomness (unevenly balanced dice) but as long they are not easily predicted, its random enough for many usecases. Random though: First thing that came to my mind at school when I was introduced to theory of probability was "if you really sit down and start rolling a dice hundred of times to see how random it is... what about those times when a dice will fall into crack in the floor, your cat will take it over or otherwise unmeasurable results? The answer "we ignore those" made me realize that I am to practical for math :-)