I've been absorbing a large amount of theories which rely on Heisenberg's uncertainty principle. I thought I understood the uncertainty principle but the theories which rely on the principle seem to be utilizing a part of the principle which I am have a problem accepting AS part of the principle. Simply stated: I understand that the Heisenberg's uncertainty principle is very clear in indicating that there are two properties of quantum particles that are not able to be calculated congruently. Either the velocity or the position but not both. Is this not a result of the human inability to measure both position and velocity simultaneously due to the effect any measuring device would have on the particle? My ultimate point is that many of the theories that rely on Heisenberg's uncertainty principle are indicative that the Heisenberg's uncertainty principle is "proof" for potential activity to occur, at least on the quantum level, that is totally random, as if, all things the same, there can be multiple outcomes. When I consider what I just wrote I wonder if this is why Einstein wrote "god doesn't play dice" when he expressed his discomfort with the Heisenberg uncertainty concept. If the concept does imply that things can happen randomly, what does this have to do with a particle not being able to have both their velocity and position not both being able to be known at the same time. Is it more than the idea that we have no accurate means to measure OR do particles at the quantum level actually not have both, at the same time, a definite velocity or position? If I can get a simple yes or no to the following question, I would be most appreciative even if the answer was not followed by an explanation: Does the Heisenberg Uncertainty principle allow for "random" activity?