Full Idea
Some reasons for believing P do not transmit to things, Q, known to be implied by P.
Gist of Idea
Reasons for believing P may not transmit to its implication, Q
Source
Fred Dretske (The Case against Closure (and reply) [2005], p.29)
Book Reference
'Contemporary Debates in Epistemology (2nd ed)', ed/tr. Steup/Turri/Sosa [Wiley Blackwell 2014], p.29
A Reaction
That seems true enough. I see someone limping, but infer that their leg is damaged. The only question is whether I should accept the inference. How can I accept that inference, but then back out of that knowledge?