Recent content by jeff

  1. J

    Rovelli in effect concedes that lqg is wrong, but still worthwhile

    The adage that "an idea is so stupid that it's not even wrong" is due to wolfgang pauli. His point was that only self-consistent theories can be judged to be logically false. In the absence of empirical data, we must rely quite a bit on self-consistency checks as a way to discriminate between...
  2. J

    Rovelli in effect concedes that lqg is wrong, but still worthwhile

    Let me begin by saying that I won't be the first to post inappropriate responses in this second attempt to treat the above subject. I previously posted the following: In the forward to rovelli's new book "Quantum Gravity", james bjorken states quite plainly that the effective field theory...
  3. J

    Rovelli in his new book admits lqg not correct, but still interesting in certain ways

    Why on earth did you think it was a good idea to post this?
  4. J

    String Gravitons yield GR. NOT

    You've got a lot of nerve to reprimand me for going off topic, especially since you do so all the time. In fact my remarks where well within the range of what is on topic in this post, namely gravitons. As I've said, the reason you've made it a hobby to dismiss the notion of gravitons is that...
  5. J

    String Gravitons yield GR. NOT

    Name two. Name a plausible one.
  6. J

    Rovelli in his new book admits lqg not correct, but still interesting in certain ways

    I've emailed rovelli the following: Hi Carlo, Congratulations on your book, which is better bound (and perhaps even better smelling, I think) than other books in that series. Now, my understanding is that the construction of lqg requires that General Relativity must be treated as if...
  7. J

    Rovelli in his new book admits lqg not correct, but still interesting in certain ways

    Who gives a sh*t about what lubos thinks? What he said doesn't have anything to do with what I'm talking about. If you have a problem with lubos, email him. My initial post is correct.
  8. J

    Rovelli in his new book admits lqg not correct, but still interesting in certain ways

    setai and jim, Did either of you actually check the book, or draft I quoted? I don't see any evidence of this or of any physical arguments in your answers. Despite marcus's usual word games and twisted meanings, what I wrote is simple to check, understand, and in fact, correct. You must...
  9. J

    Rovelli in his new book admits lqg not correct, but still interesting in certain ways

    In the forward to rovelli's new book "Quantum Gravity", james bjorken states quite plainly that the effective field theory approach to quantum gravity correctly taught us that GR must be viewed as just an effective field theory, and in fact this is the universally shared view. The problem for...
  10. J

    String Gravitons yield GR. NOT

    I'm sorry marcus, but as everyone here knows, you've stated quite plainly numerous times that you don't believe in the idea of gravitons. Of course you said this because you thought that lqg - your religion - is inconsistent with the idea of the graviton so that this idea must be unholy...
  11. J

    Introduction To Loop Quantum Gravity

    You want to play games? Fine with me.
  12. J

    Introduction To Loop Quantum Gravity

    We'll, I don't have the book on hand, but... In rovelli's dec 30 2003 draft, he says on page ix entitled "PREFACE" "What we need is not just a technique for computing, say, graviton-graviton scattering amplitudes (although we certainly want to be able to do so, eventually)" On page 5 of...
  13. J

    Introduction To Loop Quantum Gravity

    I sincerely hope you enjoy your new book, which I know you will. I was leafing through it at the U of T bookstore. I want to point out two things carlo says in the introductory bit. 1) That any correct quantum gravity theory must be able to calculate amplitudes for graviton-graviton...
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