I'm having difficulty with the language in this article on the Problem of Other Minds. It provides 3 solutions to the epistemological problem of other minds in section 1.1 - "The Epistemological Problem". I'm having difficulty understanding the third solution.
1. The Inferential Solution from Best Explanation
It first discusses the inferential solution - that the best explanation for the behavior of other people is that they have inner lives like our own. This is said to seem to be the most popular solution to other minds among philosophers.
2. The Anaological Inference Solution
Second, it explains that the traditional analogical inference is most common among "ordinary persons" (I assume they mean "non-philosophers" by this?). This is the inference that other people act like I do given similar circumstances, therefore I assume they have the same inner life that I do.
3. The Criterial Solution???
Third, it talks about the "criterial solution", and I can't quite grasp what they are saying. Here is the quote:
The criterial solution insists that the link between behavior and mental states is not an inference to the best explanation, and nor is it any kind of inductive inference. However, nor is the link an entailment (as in behaviorism). The relationship between mental states and behavior is claimed to be conceptual and characterized as criterial.
So my questions are:
What does the above paragraph describing the Criterial Solution mean?
Especially, I'm not sure what they mean by the phrase about the link between behavior and mental states not being an entailment, and what they mean that it is conceptual and therefore criterial.
If the argument is that it is conceptual, then isn't this third "criterial" solution actually not an epistemological solution, and rather it is a declaration that there is not an epistemological solution and that one must solve this conceptually?