"Einstein's Train and some Laws of Logic"


The article points towards two philosophically interesting (but so far neglected) points concerning Einstein's special theory of relativity (SR):

  1. The SR effect which is usually called "length contraction" is much more than what the word "contraction" suggests and can only be fully understood if one considers Einstein's characterization of simultaneity.
  2. The (Leibnizian) law of indecernibility of identicals is more restricted in connection with SR than one might think. The same holds for the Aristotelian principle of non-contradiction (although both laws hold if sensibly formulated).

The development of an intensional logic for space-time (different from the one suggested by Prior) is suggested in order to deal with the philosophical points of SR.


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