An unknown is what myself and Navigator are happy with. It's the atheists like yourself who are asserting that this "unknown" does not exist, or should be ignored due its being flawed or wishful thinking.
You can deny an unknown every day before breakfast, but it will get you nowhere and what exists will continue to exist regardless.
I was highlighting the problem with unfalsifiability, it does not apply to philosophical considerations. It is not very philosophical to assume something doesn't exist because it can't currently be detected with scientific instruments.
Yes, something which goes to the core of ones experience of existing.
My limiting of probabilities is merely pointing out that probabilities of events in the physical world are all that can be achieved. Compairing the probabilities of hypotheticals is meaningless, but you seem to be attempting it.
There is no good cause to think that a teapot is in orbit, which is probably why there isn't a school of philosophy about flying teapots.
There is a school of philosophy about what can or cannot be said about existence and alternative rational causes of it.