Slashdot Mirror


Why String Theory Is Not Science (forbes.com)

StartsWithABang writes: Earlier this month, a conference was held devoted to the question of whether untestable scientific ideas like string theory and the multiverse are actually science or not. While many opinions were stated and no one changed their mind, the answer is apparent: unless you're willing to change the definition of science to include "this thing that isn't science," then no, string theory is not science. It's a theory in the sense of a mathematical theory — like set theory, group theory or number theory — but it isn't yet a scientific theory. Of course, it could become science, but that would require that it actually do the things a scientific theory does: make testable predictions that can be validated or falsified.

6 of 288 comments (clear)

  1. Re:Climatology by phantomfive · · Score: 5, Informative

    No. Climatology, even if you are the biggest skeptic, makes testable predictions all the time. For example, predictions that the earth will be two degrees warmer in 100 years. That is completely testable: it will take 100 years to test it, but that's irrelevant.

    An untestable theory is one that can never be tested, even with infinite time and resources. For example, "the universe was created as-is five minutes ago." Maybe that's true, but there's no way to test it. Even if you had a time machine, it still couldn't be tested. There is no experiment that can be imagined to test this.

    In the case of string theory, the author claims that string theory makes no predictions that distinguish it from the standard model. That is, if you perform an experiment, you will not know if it is supporting string theory, or if it's just a natural result of the standard model.

    --
    "First they came for the slanderers and i said nothing."
  2. Does explanation have a role in science? by UpnAtom · · Score: 3, Informative

    David Deutsch argues that it is core:
    https://www.ted.com/talks/davi...

    Also, string theory is surely as testable as quantum mechanics. It's just currently impossible to say which is more valid.

  3. Re:Wouldn't it be more properly referred to as by losfromla · · Score: 4, Informative

    There are too many floaty numbers inserted and whenever the numbers don't work more floaty numbers and dimensions are added in to make the "theory" work. Books written about this "Not even Wrong", "The Trouble with Physics". There may be others, those are just two I am familiar with.

    http://www.amazon.com/Not-Even...
    http://www.amazon.com/Trouble-...

    --
    Only I can judge you.
  4. No difference = equivalent by Roger+W+Moore · · Score: 4, Informative

    The author claims that there is no test that can be done that would prove String Theory true as opposed to other theories.

    Unfortunately the author has proven many times that he does not understand particle physics in previous posts. The problem with String Theory is that there are far too many possible theories to consider (last count I heard it was around 10^500) to make detailed, concrete predictions. The second that we get an experimental signature for something like String Theory that number would collapse and theorists would be able to start studying the detailed predictions of a vastly smaller number of models. This would undoubtedly lead to some clever theorist coming up with signatures unique to String Theory which other, competing models would not have.

    If you can't come up with ANY difference it would mean that the theories must be mathematically equivalent for all situations which are possible. We have had this happen in physics before. Matrix mechanics and wave mechanics are both different ways of doing the same Quantum Mechanics. Nobody worries about which is the "right" way because both make mathematically equivalent predictions.

  5. Re:Evolution by Oligonicella · · Score: 4, Informative

    You do not understand what evolution is. "Create life" is not in the description.

  6. Re:The sad state of climatology by Fragnet · · Score: 3, Informative

    I have studied what the scientists say about this for ten years. But I've also made a point of studying what the sceptics say, looking at the model results compared to actual reality and squaring the science with the hyperbolic press and political statements. Let me tell you, there's a huge discrepancy here. It's almost as if the science is (on the whole) being manufactured to order. This isn't new. It happens in social "science" all the time.