> If one's definition of the Anthropic Principle in this context simply means that an observed universe will be consistent with a universe that can be observed,

> If one's definition of the Anthropic Principle in this context simply means that an observed universe will be consistent with a universe that can be observed, then I find it to be trivially true and applicable to a single universe scenario. It is "trivially" true in a sense. It's a tautology. But it's still useful for thinking about things. I think it applies just as well to a single universe or a multiverse, because even with a single universe you can at least hypothesize about other ways the single universe could behave. > However, if you are not selecting from a population, I don't find that the Anthropic Principle explains why a value is what it is. In the scenario where there is only a single value, I think the Anthropic Principle simply demonstrates that that particular value must support life. It might not answer the extremely broad and ill-defined question "why" to your satisfaction, but I find it fairly satisfying. If things were another way, then I wouldn't be observing the universe because I wouldn't exist. So it's not strange that the universe is this way, given that I exist.