Notice [in Quantum Questions] I was not saying that modern physics itself supports or proves a mystical worldview.  I was saying the physicists themselves were mystics, and not that their discipline was a mystical or somehow spiritual endeavor resulting in a religious worldview.  In other words, I disagreed entirely with books such as The Tao of Physics and The Dancing Wu Li Masters, which claimed that modern physics supported or even proved Eastern mysticism.  This is a colossal error.  Physics is a limited, finite, relative, and partial endeavor, dealing with a very limited aspect of reality.  It does not, for example, deal with biological, psychological, economic, literary, or historical truths; whereas mysticism deals with all of that, which the Whole.  To say physics proves mysticism is like saying the tale proves the dog.

The Witness is a huge step forward, and it is a necessary and important step in meditation, but it is not ultimate.  When the Witness or the soul is finally undone, then the Witness dissolves into everything that is witnessed.  The subject/object duality collapses and there is only pure nondual awareness, which is very simple, very obvious.

Like a famous Zen Master said when he got his enlightenment, "When I heard the bell ring, suddenly there was no 'I' and no 'bell,' just the ringing."

Meditation, whether Christian, Buddhist, Hindu, Taoist, or Islamic, was invented as a way for the soul to venture inward, there ultimately to find a supreme identity with Godhead.