One needn't be a crank to miss the scientific boat. The very paragon of genius, Albert Einstein, couldn't be persuaded to give quantum physics his unreserved endorsement. Here is Einstein's most frequently paraphrased statement of dissatisfaction with the theory: Quantum mechanics is very impressive. But an inner voice tells me that it is not yet the real thing. The theory yields a lot, but it hardly brings us any closer to the secret of the Old One. In any case I am convinced that He doesn't play dice.
There is a theory of societal evolution that goes like this: Barbarians invent a new culture. A middle class emerges to manage and help perpetuate the culture. An aristocracy eventually develops out of the middle class and devotes their energies to making things comfortable for themselves. Finally, a new set of barbarians smash everything apart and destroy the status quo so that the process must start all over again.