There is a saying that if a handyman only carries a hammer, then he'll treat everything as if it's a nail. Similarly, if all that scientists want to acknowledge and work with is a material, physical reality, then they won't discover anything else. (And no, the universe doesn't make you "choose" it either, Mr. Greene).
As human beings, scientists are like everyone else limited beings, who don't want to appreciate the extent of their own limitations. All their "expertise" has been highly conditioning, producing an inability to see through to how much of their methodologies are already the complex products of assumptions (which are comprised of what is already "known" or established). In this sense, Greene's disavowal of subjectivity is a good example of a blind spot which appears unable to recognize that one is already fully speaking from within the universe - since this "within" is already positing you contextually as subject.
Nonetheless, while methodology is over-controlled at the expense of a greater openness (which might inspire views of other, less material possibilities), it also seems clear that in the end, the necessary methodologies which would either verify or disprove various unexplained things - such as psychic phenomena - are nonexistent. And will never likely exist.
Why? Because they lie outside the ability of science to determine either their causes or even their very nature. Consciousness is a good case in point. The science has been good with explaining what consciousness does in the body, but not how to get it IN the body in the first place. And it won't, because it doesn't originate in the body… something a mystic or yogi would actually know experientially.
I'm afraid that the materialistic "seeing is believing" of science is just attempting to judge the Book of Reality by its cover - the physical, material surfaces of existence through the limitations of various measurements - but it's the book within that science is actually unable to read: because it doesn't understand the language… while a "mystic" or an adept does. Or, at the very least, someone who is open to allowing the contributions from that quarter.
Mr. Greene can say he is simply not interested in metaphysical questions, but it seems disingenuously offered to cover his scientific behind… which I accept. In the end, while it is true that everyone has a right to their opinions, there are opinions which provide more meaning and value than others. And those will not come from science.
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