FOM: Simpson query

[Torkel Franzen]

  Hartry Field says:

  >In the case of number theory I am reluctant to believe that sentences
  >formally undecidable in the relevant theory (call it M) are objectively
  >indeterminate.  [Here I suppress a complication about there being no one
  >unique relevant theory, which leads to an analog of higher order vagueness.]

  But is it possible to specify any relevant theory at all?

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Torkel Franzen