sentences:  The non-classical nature of the superposition process is brought out clearly if we consider the superposition of two states, "A" and "B", such that there exists an observation which, when made on the system in state "A", is certain to lead to one particular result, "a" say, and when made on the system in state "B" is certain to lead to some different result, "b" say.What will be the result of the observation when made on the system in the superposed state?The answer is that the result will be sometimes "a" and sometimes "b", according to a probability law depending on the relative weights of "A" and "B" in the superposition process.