Hi MrQ
Just saying that necessary truth is necessarily truth is not the answer.
Classic "cart before horse" scenario. In effect you are saying "If there isn't somebody to witness and formulate models or descriptions of a reality then that reality can't exist? Why on earth not? The reality comes first and our descriptive models (which includes science/mathematics and logic) is formulated by us to explain that which exists in reality. If humans disappeared today there is absolutely no reason to assume that the reality of the universe will cease to be....unless you want to provide the math that says otherwise....
We have to analyze and see what this statement means. How can it be that something that its necessarily is endorsed and workout by a mind its existence is not dependent on it?
Are you sure you are not of a strongly religious bent? This sort of attitude has been a classic through the ages of religious dominion....the need to feel that somehow we humans are at the centre of it all and our existence is the be all and end all of everything....the evidence that is coming in (especially from cosmology) suggests that we are nothing at all special (planetary wise) in a very ordinary star system in a commonplace galaxy in a run-of-the-mill part of the super-cluster we are in.
In the grand scheme of things we are just not that important (to the universe - although obviously to us we are everything....see the contradiction?).
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