Randomness generated by deterministic processes The tag excerpt of randomness says:

Randomness <...> can also be generated by deterministic processes.

Is that not intrinsically contradictory? Or does it consider randomness epistemically where an ontologically deterministic process appears random when insufficient conditioning information is available (an example of pseudo random number generator comes to mind -- thanks to Tim)? If not, could you offer a clarifying example?
 P.S. The other part of the excerpt is Randomness is often modeled with probability distributions, but can also be generated by deterministic processes. In my opinion, this sounds like an apples-to-oranges comparison, making the use of but questionable. 
 A: one example that comes to mind that I saw being used as an example in a similar context, is calculating digits of pi or sqrt(2) or any other irrational number. The individual digits are uniformly distributed as far as we know with no relationship between the previous digits and the next digits. You don't know what the next digit will be until you observe it, e.i., compute it, so you can say that it will be random, but of course completely deterministic.
Yes, this is similar to how the pseudo-random numbers are computed. So is it random or pseudo-random? Is the billionth billionth billionth digit of pi that we won't be able to compute until hundred years from now less random than a decay time of some specific atom? You decide
edit:
digits of pi or sqrt of 2 are going to pass pretty much any randomness criteria used to test pseudo-random generators, which is not the case for other pseudorandom generators. At least that's what mathematicians believe, I a not sure, I am not a number theorist
