In the start I say: God can be 3 things, idea only, idea + existence in reality, exist in reality and only seen to exist. I'm showing by what we observe about "God", that it's no an idea nor idea + existence, but rather only seen to exist. The reason is due to due to his magnitude in terms of existence.
So it's like if you ask about "yourself", are you an idea, idea + existence, or just seen to exist. I would say we are category two. Our idea of own self is there + we exist. Our idea of ourselves can be wrong so that our real existence is something else then we imagine ourselves tot be + it's possible we didn't exist (if our parents didn't meet). We aren't necessary being, but we can rule out that we are a mere idea. So we are category two. However, I'm saying what we observe about God (which can be three categories from all we know perspective) we rule out 1 and 2, and see he is type 3. This is due to observation that his magnitude is at the level of being necessary.
If you look at statistical assumptions, such as black box, margin of error and the probability of occurring, these assumption are an ideas of the potential existence of something. However, being so dark and fuzzy, the goal, does and does not exist, at the same time, until it happens; win the lottery, and then it exists by observation. In the black box, you don't exactly get idea-existence, idea-fluttering existence and then firm existence after the experiments. The middle one is not too different from the idea and existence of God. Both are not fully rational or firm; flutter, but have faith it will firm out in some way, someday.
For example, we have never found life on any planet but the earth. From a science POV, that statement includes all the hard data since the start of civilization. However, there is also the idea in science that life exists in other planets, even without any hard data. Science can accept that. In this case, one does not need to see or have hard data to believe. What we think we know of biology, in the light of dice and cards, suggest life has to be in other places. But this is still stuck at an idea, that engages one's deeper feeling of faith in existence, all without proof of existence.
I would be hard pressed to make the, life on other planets people, follow the rules of science and data, and not just use faith in a fuzzy dice extrapolation of biology that start evolution in the middle. But it is that faith in an idea of fluttering existence that pushes people forward to where new things are learned, even if we never reach the main goal. It is outside the box of hard data, but still has value.