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Ockham's razor is a silly axiom historically. Einstein basically was following Ockham's razor when he repeatedly expressed his preference for the simplicity of determinism over the complexity of quantum theory. Einstein kept insisting on his view with the now infamous words: "God does not play dice." To this Bohr famously replied: "Einstein, stop telling God what to do."
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Ockham's razor does not say that the simplest theory is right. It says that the theory which uses the fewest acting agents, while still taking into account all data, is most likely true. There is a difference there. It also takes into account probabilities. As in, if you have two theories which are not equally likely, the more likely theory is...more likely. If, during a thunderstorm, I hear a large crack, and I rush to my window and I see that the tree in my backyard is split open and broken in half, I assume it was struck by lightning, not that a grenade hit it. Either one could be possible, but the lightning is more likely. If I later find metal fragments scattered about my yard, then the lightning theory is called into question, and the grenade theory is stronger. Both times, I use Ockham's razor.
