If the universe was fine tuned for our life...

[Jenny A]

Wait a minute here. For the existence of sub-realities (as you define them) to have any predictive power for a larger model, like the universe we inhabit, they would have to be a great deal more like the universe, i.e. real. And that's the rub, the space these sub-realities describe is imaginary. They don't actually exist anymore than the reality in a novel exists.

Speculating that we might be part of a simulation like a computer game is fun, but it doesn't add to the likelihood that such is the case. We know of no simulated reality that describes actually created space. Therefore I don't see that sub-realities are of any use in determining how the actual universe came to be.

You miss understand what is being predicted. What is being predicted is this:

Things which satisfy the following definition require of intelligence to come into existence.

A sub reality is a space continuum that is governed by rules. The space continuum of a subreality is not the space continuum of its parent reality

The reason this prediction currently holds is because everything that has thus far been presented as satisfying this definition requires intelligence to come into existence. If our reality satisfies this definition then the prediction likely holds for it as well. This is the induction.

Sorry but that is an absurd prediction. We have one universe which appears to be governed by rules many of which we have discovered. But our "rules" are really just descriptions of how things in the universe behave. There is no evidence that the rules "created" the universe by describing it. The rules are merely us humans describing things.

The sub-realities you have defined really are created by the rules, to the extent that they exist at all. But they really do not exist except as a set of rules. We cannot create real space merely by making up rules for how that space should work, no matter how complex or internally consistent the rules are.

To induce anything about the the construction of the real world based upon these sub-realities you have to assume that the the real world is a great deal more like a sub-reality than we have any reason to believe it is. Or you have to believe that sub-realities described by an intellect, cause those sub-realities to exist in any way other than as a thought experiment.