Heinserberg's Uncertainty Principle is neither an arbitrary literary construct nor a pseudo-psychological explanation of phenomena. It is an actual fundamental principle of Physics which describes the dichotomous and paradoxically counter-intuitive nature of the fabric of reality.
In simple terms, it exposes a limit in the ability to measure specifics regarding subatomic particles. Even further, it exposed the concept that matter is discrete to be a poverty borne out of our bias of familiarity with the relatively macro scale of the universe.
It establishes that, the position and momentum of a subatomic particle cannot both be known with certainty. That the more you measure the momentum precisely, the less is your ability to accurately measure position, and vice versa.
Some have argued that this is due to the fact that the very act of measuring interferes with the measurement.
Niel's Bohr's Copenhagen interpretation of Quantum Physics holds that this "measuring will interfere with the measurement" idea is erroneous, that since particles do not have an actual position or momentum at any particular time, and that they all exist in a quantum probability cloud, which sometime allow these particles to be in two places at the same time, this inability is buried much deeper in the fabric of spacetime an it is not merely an issue of inability to measure, that the specifics are unmeasurable because particles do not have specific positions or momentums.
This led to the famous "God does not play dice" remark by Albert Einstein, in an apparent figurative expression of disbelief that the basic building bloacks of reality can be so arbitrary and fleetingly probabilistic.
