I believe a sizeable proportion of HN users would benefit from reading these two articles by Philip Guo. I know I did.

Geek behaviors present during conversations

http://www.stanford.edu/~pgbovine/geek-behaviors.htm

Social tips for geeks

http://www.stanford.edu/~pgbovine/social-tips-for-geeks.htm

I like the intention of the second one but it felt too prescriptive for my purposes. I've had decent success trying to learn to better empathize genuinely.

Practice with public speaking and corporate politics and influencing are doing a lot to help me better understand how to befriend and relate to people that don't share my interests. It was initially surprising for me to be one of the geekier people in a building that is ostensibly full of IT workers.

Things that work for me: Toastmasters, Dale Carnegie books, Rands in Repose (blog and/or books), regional sports blogs.

Correct. I could have written "bored by the whole exercise" rather than saying she had "checked out of the conversation".

To recap-- my brother said, literally, one sentence. I added one more sentence, relating the question to another field of study. Our friend was instantly, irremediably, and unabashedly bored.

From which I concluded that she took little pleasure in exploring any aspect of the statement she herself had introduced.

That she was "bored" by the exercise doesn't necessarily mean that she doesn't share you and your brother's bold, hard-driving, searingly intense curiosity about the world, and the nature of our ability to infer knowledge about it.

It might, instead, have had something do with the fact that the point you guys were trying to make was rather trivial.

Exactly. Nobody cares if the exact details aren't 100% correct in a non-technical discussion. Suppose I begin recounting a blog entry which describes an odd situation. I may not remember all the details right, but I certainly have the gist of it and can convey that. There is no point in someone stepping in and saying, "you know, it was actually in Des Moines, not Dallas," if the city is entirely irrelevant to actual content of the post.

What is the group supposed to do with that statement? Someone has to segue back to the original topic, while someone else just lost face. Most people will just either ignore the correction entirely, or just drop the topic altogether.

Or that disecting a joke ruins it?