Contextualism

What is the difference between contextualism and subject-sensitive invariantism? Which is better motivated by shifting patterns of knowledge ascriptions?

(January 2025): Linguistic judgments differ a lot, but I was surprised to find that mine were so contextualist. Daniel said that he was quite annoyed that he couldn’t come up with an example context where ‘they ate the snacks. Well, they didn’t eat them, but they ate them’ worked (but finally did come up with the snacks being soup).