Full Idea
With Peirce, we endorse a non-positivist version of verificationism - no hypothesis should be taken seriously if apparently beyond our capacity to investigate, and serious metaphysics must concern at least two plausible scientific hypotheses.
Gist of Idea
Non-positivist verificationism says only take a hypothesis seriously if it is scientifically based and testable
Source
comment on Charles Sanders Peirce (How to Make our Ideas Clear [1878]) by J Ladyman / D Ross - Every Thing Must Go 1.3
Book Reference
Ladyman,J/Ross,D: 'Every Thing Must Go' [OUP 2007], p.29
A Reaction
[compressed] They say this is NOT a theory about meaning, as 'The Big Bang was caused by Elvis' is perfectly meaningful. Verificationism always seems to rule out bold speculation. Don't say 'take string theory seriously', if we can't test it?