Autism

Yep! When I visited the Bodies exhibit back in like 2006, I caught an error in one of the displays. I can't remember exactly what it was, but I think it was something to do with putting "insulin" instead of "glucagon". I knew I was right because I was taking a class that covered the material and it was fresh knowledge. I went up to the museum employee to tell him about the error. The dude straight up just walked away from me and started talking to someone else. I found that really disrespectful, so I went somewhere online (maybe their website) and wrote the error and the rude employee's behaviors as a comment. I wish I remember where I posted that.

We are the exact same. I did it here recently and someone told me that no one likes me. :) Oh well.

Same! I do a few things like that. If someone makes a pun which people laugh at, I don't force myself to find it funny; I just look at the person and then smile inside while people try to explain it to me- no, I get it, it's just not actually funny or clever to me, but listening to people try to explain why something should be funny is amusing.

That could be framed as infodumping and a way of saying he cares about you. If he's like me, I imagine his mental process is: JoYo is here, I feel good because they are here and I learned something cool recently, let me share that cool info I learned so that they can get the same joy I got from it, get their attention by using the script "I don't know if you know about TOPIC", start engaging memory of the info dump. He might not even be consciously aware that you're answering him for the purpose of telling him whether to go on or not. Instead, he will take any response you give as saying, "I hear you and am now paying attention."

If you ask him to stop, does he stop? If he does, then maybe having a talk about how you guys can agree on a way to communicate if you are interested in hearing it or not could help. If he doesn't, then it sounds like y'all might need to work on establishing some boundaries.

I had some friends that were very passive in the way they communicated, so they would not directly say "I'm not interested in that right now." Instead, I was supposed to somehow figure it out from context and cues. The thing is that I don't get those. They do not register at all. What ended up happening is that they would then get passive-aggressive or pissy with me, but I had no idea why, so I would just stop wanting to be around them. They would later ask me why I was absent, and I responded that it seemed like they didn't want me around. We did this dance until I got tired of being so self-conscious around them and started going mute. If they would have just been direct with me, I would have loved it and perhaps we could have saved the relationship. Rather, what I remember is that they were inauthentic and unstable, while they probably remember that I was inconsiderate.