Full Idea
Reality is what is invariant among true complete theories.
Gist of Idea
Reality is the overlap of true complete theories
Source
Gilbert Harman ((Nonsolipsistic) Conceptual Role Semantics [1987], 12.2.4)
Book Reference
Harman,Gilbert: 'Reasoning Meaning and Mind' [OUP 1999], p.215
A Reaction
The sort of slogan that gets coined in the age of Quine. The whole manner of starting from your theories and working out to what we think reality is seems to be putting the cart before the horse.
Related Ideas
Idea 14334 Modest realism says there is a reality; the presumptuous view says we can accurately describe it [Mumford]
Idea 17644 Metaphysical realism is committed to there being one ultimate true theory [Putnam]