I think what they're getting at in writing about how people are not given the right frameworks to reason about a tool's usability they're saying that people mig

I think what they're getting at in writing about how people are not given the right frameworks to reason about a tool's usability they're saying that people might say something "feels readable" without knowing whether it's actually easier for them to parse. Similarly for other statements. Someone might say a tool "feels fast" without actually knowing if it's faster for their problem domain than another viable tool. An analogy in the art world is that drawing lines which imply motion behind a character might make them "feel faster" but are they actually moving at all?