"holy crap, this explains why people insist on seeing relevance claims in my statements that I didn't put there. If the brain doesn't distinguish statement from implicature, and my conversational partner believes that A implies B when I don't, then of course I'm going to be continually running into situations where people model me as saying and believing B when I actually only said A."

In particular, I've noticed that depression causes recollections to be modded in the negative direction. People will remember slight rewordings of sentences that makes their implications sound worse.