"Have it your way--all thought is biomechanical, intentionality is just a deterministic accident, and all spiritual awareness is illusory, a simple happenstance of brain oxygen levels ..."

Well, I'm glad that you and Amos now agree with me, GfS!

Oh! I gedditt! Amos was being ironic!

He was probably right though: All thought is (probably) biomechanical, intentionality is (probably) just a deterministic accident, and all spiritual awareness is (probably) illusory, (it's probably)a simple happenstance of brain oxygen levels ..."

There's no evidence for anything else ... apart, that is, from dubious anecdotal 'evidence' ludicrously over-extended and elaborated by cranks, charlatans and madmen.