The real world has moved on.
How did you come to be possessed of such an uncommon and piercing insight?

Make sense?
Neuroscience would tell us far more about that experience than the humanities could.

So what do we know now that we believe in physical causes instead of metaphysical ones?
There is evidence for physical causes, to put it simply.

Fourth, you still have to arrive at the important truths...
Why, and how do you know your method is the most appropriate?

Well, I've never seen what's interesting about it. It sounds like a curiosity to me.
Seriously?

I'm not interested in knowledge for knowledge's sake here.
That's with magnetic fields, and is temporary.

We now have the ability to semi-invasively target specific neural circuits and activate or deactivate them, using the installed genetic expression of neuronal structures sensitive to predetermined stimuli. As we understand more of the brain cell classes and their functions, we will learn more of how neural circuits operate, how they interact with other neural circuits to produce complex behaviors - enduce a subject to pull a lever over and over again through neural manipulation -, sensation - switch pain processing with pleasure processing and cause the subject to cut itself with a knife voluntarily - and abstract attributes - including thought, belief, memory, value, consciousness, etc. We would be able to directly and permanently manipulate these thing, even to specification.

This is being done now, at the level of behavioral patterns, with small mammals. How many years before we move up to the hominids? You can't see the implications, or possible applications, of all this?

I'm interested in personal, subjective knowledge of how decisions and thoughts with respect to morality occur.
Trivial.