Full Idea
We know from Gettier that if you are right to regard Q as true, but you are sufficiently confused about HOW it is true - about how things stand with respect to its subject matter - then you don't know that Q.
Gist of Idea
Gettier says you don't know if you are confused about how it is true
Source
Stephen Yablo (Aboutness [2014], 07.4)
Book Reference
Yablo,Stephen: 'Aboutness' [Princeton 2014], p.119
A Reaction
I'm inclined to approach Gettier by focusing on the propositions being expressed, where his cases tend to focus on the literal wording of the sentences. What did the utterer mean by the sentences - not what did they appear to say.