Re: Objects, Objectives, Objectivity

Bill Everdell notes with favor Frege's definition of "objective"
as being perceivable by more than one observer as the same thing.

That brings Peirce's definition of "real" to mind --

That definition of "objective" merges well with the definition
of "real" that Peirce derived from Scholastic sources, namely,
"the real is that which has properties". The full strength of
this definition is clear if we stress the sense of "proper"
in "properties", that which is proper to a thing, its own.

It is no coincidence that this very sense of "proper" is
conveyed by the German function word "eigen". In physics,
the operation of making a particular type of measurement
or observation is represented by an algebraic matrix, and
the possible results of that measurement or observation are
given by real numbers called the "eigenvalues" of that matrix.

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