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Also, by this logic, neither gravity nor string theory are scientific. You can't weigh them! Or define their location!

• lutusp 14y ago
  > ... by this logic, neither gravity nor string theory are scientific. You can't weigh them! Or define their location! False analogy. As to gravity, its properties are open to experiment, which leads to theories that can be tested and falsified. Gravity has gone through many revisions over the years -- from being instantaneous action at a distance obeying a 1/r^2 rule, to resulting from spacetime curvature, and all tested, and always open to revision. And the book on gravity is by no means closed -- we need a quantum theory of gravity to be able to unite gravitational and quantum theories. As to string theory, its practitioners agree that it needs to produce testable predictions in order to become scientific. Which is more than I can say about psychologists, who are in the same position but who insist that what they do is science. At the moment, physics only understands 4% of mass-energy, while the rest (dark matter, dark energy) is unknown. The difference? Physicists freely acknowledge what they don't know.