Strongly disagree.<p>We have a mathematical model of physics, which includes things like superpositions of wave-functions. We don't know how or even <i>if</i> they map on to reality, we but do have a habit of talking equating "states" with wave-functions. Then when describing superpositions, we end up with paradoxes like your first sentence.<p>This goes beyond Einsteinian "the physical world is not what you thought it was" thinking, and starts challenging logic itself. If QM really did challenge logic like that, then we would have to start rebuilding every other field of thought, including even mathematics.<p>I think it is more reasonable to see if some lateral thinking in QM can make the seeming paradoxes go away.
> By applying a magnetic field, this spin points up, down, <i>or simultaneously points both up and down</i> to form a qubit.<p>Is there any real physical evidence that an electron can be both states at the same time, <i>outside the mathematical framework of QM</i>?