Question: My first thought is simply 'time frame', but then Anthropology isn't exactly bound to the past...

A second look makes me wonder if "experimental philosophy" is not simply some area of overlap between Psychology, Sociology and of course Anthropology. An aside question that came up in this regard is: Can the same research material, e.g. *questionnaires*, be used by different disciplines?

Now I don't want to come across as critical of the existence of "experimental philosophy", after all it may turn out future generations will much benefit from the Democratic Depository of Philosophical Intuitions. 

**But it seem there is a demarcation problem here I'm unable to find any sources to resolve?**

See also this apology:
<https://leiterreports.typepad.com/blog/2006/03/experimental_ph.html>

Answer: 
A lack of evidence for something is not evidence for a lack of something. By the very nature of the concept, it is not possible to "prove" (or really empirically determine, since true proof struggles to exist outside mathematics) the non-existence of a God, because God is inherently a transcendent being who exists above the rest of reality, and as such God's existence can always be reconciled with any given feature of reality by saying that He put it there. If He cannot be observed it's because He doesn't want to be observed. The argument for atheism is not that the lack of evidence for God proves that God doesn't exist, but rather that since it is not proven that God does exist there's not much point in bogging yourself down with the unfounded belief that He does.

To take the epistemology out of a religious context, think about how you could be a brain in a vat being fed artificial experiences by an advanced computer, instead of the full-bodied human operating in the real world that you think you are. The lack of evidence for being a brain in a vat does not constitute evidence that you are in fact not a brain in a vat. So you're just sort of stuck in a position of not knowing what to believe, and really there's no right answer. You can assume that you are a brain in a vat, or you can assume that you aren't. It's a lot more convenient to assume that you aren't, but you could just as well be wrong as you could be right, and for all you know I could even be the mad scientist who put your brain in a vat, telling you this to maintain the façade.

(hope this didn't seem too biased towards my own secularism)
I have more senses than sight, hearing, touch, taste, and smell. In a dark room, I can tell you whether my right elbow is straight or not, to give one example, without seeing it or touching it. Nor is it necessary that every observer be able to observe something. I've known some blind people, for example. If I put a pencil partly in a glass of water, everybody who sees it from the side sees that it's bent, and can feel that it's not.

So, you're gravely oversimplifying. We use senses to construct something of a consensus reality, and accept that there are things we can't detect. Nor are you qualified to say that no one has experienced X; that is an assumption based on the concept that X doesn't exist, and is circular reasoning.

So, it's possible that some people have a sense that somehow perceives God. It doesn't have to be everyone, and the perceptions don't have to be all identical.

Now, it's true that we can't make an artificial God detector, but it's conceivable that we can produce one in the future that works on the same principle as people's sense of God.