As far as we know. That isn't the same thing as "it is". If you assume that quantum processes are truly random, there are a bunch of ways for a computer to gen

As far as we know. That isn't the same thing as "it is". If you assume that quantum processes are truly random, there are a bunch of ways for a computer to generate truly random noise - the easiest class being shot noise (connect a computer to a good camera in an almost pitch-black enclosure, or send a small current through a diode), but there are others.