Oddly, from following certain threads in this forum I've come to believe that it is often used instead of presenting an argument. Funny how I got that impression. Perhaps I should have posted "Wrong" or an emoticon instead? I am still trying to learn this stuff- it is not my natural style.
However I do trust your opinion as an expert in terms of its proper usage. In my context, I was indicating that "the numbers" and evidence in favor of Thor 2's post are already documented upthread, so: (1) What further evidence are you asking for? The evidence and numbers are already here in this very thread. (2) Therefore you disagree with the evidence, which is the point at which you usually post: 'K. Which I gather means- "we disagree, which is okay by me." Except it often appears to not be okay because you keep posting.
But realizing that you disagree with Thor 2 (and me) and that the evidence and numbers have not convinced you otherwise, I posted 'K as per my understanding of its use. Hey, I am only trying to learn from you!