Full Idea
The pragmatic theory is unsatisfactory because usefulness is a relative notion. One theory can be useful to group A while being thoroughly impractical for group B. This would make the theory both truth and false.
Gist of Idea
The pragmatic theory of truth is relative; useful for group A can be useless for group B
Source
Leon Horsten (The Tarskian Turn [2011], 02.1)
Book Reference
Horsten,Leon: 'The Tarskian Turn' [MIT 2011], p.13
A Reaction
This objection, along with the obvious fact that certain falsehoods can be very useful, would seem to rule pragmatism out as a theory of truth. It is, in fact, an abandonment of truth.