Full Idea
The new riddle of induction ('grue') seems to demonstrate that sound inductive inferences are arbitrary because they depend on the actual language people use to formulate predictions.
Gist of Idea
Predictions are bound to be arbitrary if they depend on the language used
Source
Bernecker / Dretske (Knowledge:Readings in Cont.Epist [2000], Pt.V Int)
Book Reference
'Knowledge: readings in contemp epistemology', ed/tr. Bernecker/Dretske [OUP 2000], p.437