But the statement is independent of his credentials or his science. Science, perse, will never arrive at this conclusion due to the limitations of its own methodologies.
This is true. At this point of time, I would say that scientific knowledge and study of the nature of consciousness is incomplete, and using it to prove nondualism is a labor in futility, as much as I admire your tenacity.
Science uncovers partial truths and can never present a picture of the whole system all of a sudden. It is more like solving a jigsaw puzzle one at a time.
For example, a few decades back chemical fertilizers were introduced in agriculture by scientists and endorsing them,and this was accepted by all without question. Later on, it was found that the incidence of carcinogenic diseases was significantly high in those who ingested food created from farms where chemical fertilizers were used.
This lead to the movement for organic farming in the west, which is now spreading all over the world. So what was then accepted by science as valid then is now being rejected.
Similarly you can see the craze for chemical shampoos, soaps, cosmetics are also dwindling in a similar manner, and people are more interested in the herbal or natural varieties.
This came about because science could not come up with a holistic picture in the beginning itself, of the effects of food created by chemical fertilizers or other chemical products on the human body.
It was the statistics of a large number of unfortunate victims of cancer and so on, that lead to people rejecting them later on.So I would say that science cannot come up with a holistic picture of a subject as broad as consciousness in its totality all of a sudden.
But that does not mean that we have to wait two or three centuries for science to validate the nondualist philosophy, in order to experience samadhi or nirvikalpa samadhi for ourselves. Samadhi or nirvikalpa samadhi can be experienced by anyone by following the yogic, buddhist and advaitan philosophical methodologies meticulously to their legitimate conclusion.
These are ancient timetested philosophical systems created by ancient enlightened sages that produce repeatable and reliable results, along with bliss and joy, which is independent of impermanent external sensory objects or events ,and which modern materialism have utterly failed to provide.
The instances of Ramana Maharshi, Nisargadatta Maharaj,H.W.Poonja, Annamalai Swami, Sadhguru Jaggi Vasudev, Nirmala Devi, Dada Gavand, Prem Nirmal, Anandmurti Gurumaa, Mooji, Byron Katie, Metta Zetty, Madhukar, Sailor Bob Adamson, Gilbert Schultz, John Wheeler, Charlie Hayes, Adyashanti, Jed Mckenna, Jeff Foster, Robert Adams, Douglas Harding, Eckhart Tolle, Isaac Shapiro,Dave Oshana, Jean Klein, Rupert Spira, Francis Lucille, Barry Long, Franklin Merrell-Wolff , Ilie Cioara, Bernadette Roberts, Jan Frazier, Adam Oakley,Scott Kiloby, Greg Goode, Jac O Keeffe, Toni Packer, who all after experiencing enlightenment, through their own personal testimony have validated the teachings of the ancient enlightened masters, and are now teachers in their own right.