I appreciate your input and criticism. I'll take your advice.
Thank you, I kept meaning to respond to your last post in the "God Equation" thread, which was one of two serious responses to what I posted, but I kind of had my hands full with defending myself against people accusing me of being insane and illiterate for bringing up a book I heard about and ordered that day.
Yeah, that kind of puts me on the defensive.
In response to what you said, in the "God Equation" thread,
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
I am reluctant to get further into this discussion, except to point out that both Superstring theory and M-Theory are massively complicated. Few who are not dedicated practitioners understand it fully--even among theoretical physicists. I certainly don't, and I doubt very much that anyone on RfM does, except perhaps from very meager and distorted populist accounts. As such, as a layperson, one must be extremely careful of popular books that attempt to explain String Theory. In the first place, they are almost always String theorists themselves (like Kaku) who are unduly committed to String Theory over many years, and are not similarly well versed in its alternatives. Thus, such books rarely provide an objective view of the state of the theory, much less an adequate account of the criticisms of the theory.
++++++++++++++++++++++++++++++++++++++++++++++++++++++
I agree that very few understand the complexities of M Theory or Super String theory, and I'm not an expert, nor is theoretical physics my profession, I'm just interested in it and read a lot about it, from people I'm interested in, Michio Kaku is one of them I agree with most, but there are others I agree with too, especially Roger Penrose and Stephen Hawking.
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
In specific response to your points here:
(1) Kaku did not develop M-Theory. Spring Theory was developed by numerous theorists over several decades. M-Theory was initially the brain-child of Ed Witten in trying to unite the five versions of String Theory. Kaku no doubt *is* an expert on such matters, and has made contributions to this effort.
In 1974, Kaku and Prof. Keiji Kikkawa of Osaka University co-authored the first papers describing string theory in a field form. He explains it here:
https://www.youtube.com/watch?v=RZ5dj-Ozwm0 in 4 minutes and here in 20 minutes:
https://www.youtube.com/watch?v=_y_euQiBpLU"Abstract: Recently, a revolutionary new theory has shaken the foundations of modern physics, introducing bizarre new concepts such as higher dimensions, parallel universes, and the multiverse into science. Vigorously opposed by the Old Guard in physics, it has since become the leading candidate for a "theory of everything" which will allow us to "read the mind of God," as Einstein hoped. Einstein spent his last 30 years struggling to find a single theory which would unify all physical laws, much like his equation E = mc2 united matter and energy. He failed. But many physicists now believe that they might have it. It is called string theory or M-theory, and postulates that all the particles, atoms, molecules, etc. in the universe are nothing but musical notes on vibrating strings or membranes. If true, it means that physics represents the beautiful harmonies of nature, that chemistry represents the melodies played on these strings, and the universe is a symphony of strings. It would also mean that the "mind of God" is cosmic music resonating through 11 dimensional hyperspace. " Michio Kaku
(2) Calling M-Theory "the best" unification theory is absurd. In the first place it is not a complete theory, and is more a conjecture than a theory. In addition, it has not been confirmed by experiment. It is a mathematical theory whose main appeal is its mathematical elegance. Many prominent physicists reject in unequivocally as non-scientific!
The only reason I called M Theory the best candidate for a unified field theory, or theory of everything, is because that's what Hawking called it in his last book, "Brief Answers to the Big Questions, How It All Began" pg 56, "M Theory, which is our best candidate for a complete unified theory, allows for a very large number of possible histories of the universe. Most of these histories are quite unsuitable for the development of intelligent life. .....The human race does not have a very good record of intelligent behavior."
(3) There *are* alternative unified field theories; including most famously, loop quantum gravity, and twister theory; which are also currently being studied and developed. (See L. Smolin, Three Roads to Quantum Gravity) No single one of them can be considered the theoretical "best." However, I will grant that String Theory (M-Theory) is no doubt the most popular; which is largely a cultural phenomenon within the scientific community rather than an indication of relative merit.
(4) String Theory, Superstring Theory and M-Theory have been the subject of extensive criticism by people who know it and understand it. See for example, Lee Smolin, The Trouble With Physics: The Rise of String Theory, the Fall of a Science, and What Comes Next (2006); Peter Woit, Not Even Wrong: The Failure of String Theory and the Search for Unity in Physical Law; Joao Magueijo, Faster Than The Speed of Light:The Story of Scientific Speculation (2003).
Finally, I know enough about theoretical physics to know that M-Theory has nothing whatever to do with God, in any shape or form (e.g. Spinoza's or Einstein's) outside of one's favored and distorted definitions that are clearly adopted in order to sell books.
M-theory is a theory that unifies all consistent versions of superstring theory. Kaku's book is about what Stephen Hawking wrote, "If we do discover a complete theory, it should in time be understandable in broad principle by everyone, not just a few scientists, and just ordinary people, be able to take part in the discussion of the question of whit it is that we and the universe exist. if we find the answer to that, it would be the ultimate triumph of human reason, for then we would know the mind of God."
Edited 2 time(s). Last edit at 04/13/2021 12:53AM by schrodingerscat.