Most quantum randomness is not observed, since strange quantum effects are more likely seen at the microscopic level. However, quantum randomness has a greater chance of being noticable if it occurs within the physical brain of an intelligent entity such as a human. Even though our neurons are very small, a quantum effect within one may cause large scale changes via a neurological reaction. For example, a small quantum effect in a neuron could cause me to raise my arm. Quantum effects are effectively magnified by humans and kulti.
Quamepsychism takes this a step further, and posits that the seemingly random behaviour of intelligent entities can be explained with quantum mechanics. It is possible our minds can somehow interface with the quantum world, and our intelligence "lives" there.