A theory is a collection of propositions, gathered to illustrate the principles of a subject, in this case a bunch of video games. In other words it's a result of dialectical reasoning based on the evidence that is given to us. Naturally the debaters have certain beliefs, without them there would be no debate.

In your case however, you have chosen to ignore certain pieces of evidence. Ignoring evidence leads to a situation where timeline theorizing ceases to be a process of reason and begins to resemble religion.

Religion is a set of unquestionale beliefs that can not be scientifically proven or scrutinized. As someone here put it, science gives us questions we can not answer, religion gives us answers we can not question. I believe your opinions stated in the opening post go much better with the latter.

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