The following excerpt is from the self help psychology book, Be Your Own Therapist. This author has a significant background in the sciences, studying about probabilities in college, also several years teaching nuclear reactor technology in the Navy's nuclear propulsion program. Nowhere in the undergraduate or postgraduate instruction I received did I hear of any difficulties with theories about randomness.
Most branches of science depend heavily upon the concept of randomness.
According to randomness theory it is a 50-50 random chance whether the coin I flip turns up heads or tails. Scientists have completed studies in this area. For example, set up an experiment in which a human subject guesses which one of five shapes is on the back of a card. The results are startling to those believing in random chance. Further, they are as capable even if the experiment is rearranged so that no one, not even the experimenter, knows what is on the back of a given card during the test.