What’s something you are extremely knowledgeable about that has very little chance of actually coming up in your life unless you bring it up?

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  1. The population dynamics of marine fish species. (How quickly they reproduce, important to commercial fishermen and precious few others. 🙂

  3. A lot of true crime cases but it’s kind of embarrassing so I have to know that someone else is into it before I pop off.

  6. Immunology. But even if I am able to bring it up, nobody understands the terminology. Covid vaccine was the only time I could talk about it regularly but, still, nobody understood (regardless of their stance).

  7. I know a lot about cars, but I doubt anyone will ask me to fix their engine anytime soon. Unless they want it to explode or something.

  8. The mainframe assembler.

    Actually know that this code is stil crucial in the world we don’t see (particularly for time-synch amongst a whole range of things including POS machines in supermarkets, mortgage calcs, ATMs)

    But hey, bit of a party killer.

  9. The dimensions of my penis.

    I’ve lived with it my entire life, nobody knows more about it than me. But there’s only one person who cares how long or big around it is, and she’s familiar enough with it that she really doesn’t need to ask.

  10. Scientology. I was once a low-level member, though it didn’t last very long since I’m terrible at following instructions like “don’t ask anyone else for information about us.” Once I broke that rule and found out what was going on at the higher levels of Scientology, I got out. I’ve since made it one of my missions in life to raise awareness of Scientology’s crimes. However, this subject rarely comes up in casual conversation because it bears little relevance to most people’s lives. They’re only about 30,000 to 35,000 Scientologists left in the world, and that number is going down, not up, which makes me happy. May it die sooner rather than later and free those still caught in its web of exploitation and blackmail.

  11. Tudor era England. The renaissance era just fascinated me throughout my youth. I can’t even tell you why. I’m not on the spectrum but it was definitely my special interest for years.

  12. Lots and lots of cool sealife facts. Most boys had a dinosaur/truck phase. I had a marine biology phase (mostly sharks and whales)

  13. I am an expert in the peptidergic stress mediated pathways between the bed neculi of the stria terminalis and the central amygolid neculi. If you don’t have epilepsy, you would not care.

  17. Genetic relations between the Yamato, Ryukyu, and Ainu people in Japan. Also, the Japonic languages.

  18. Deprograming and by proxy the techniques cults and groups use to brainwash people. The reality is it very rarely comes up as a conversation unless a documentary or something comes out on Netflix.

  19. Me and my brother can basically name any car make and model by glancing at them for a second or two. This has literally not served me at all (good or bad) in my 44 years of life.

  21. Call of Duty (specifically the CDL or Call of Duty League)

    I watch hours a day of matches, study their communication and strategy, know them all by both gamer name and real name, etc.

    It’s a bit embarrassing, but it’s just something I’m big into. I don’t watch a single other eSport. I play a lot of CoD and have honestly gotten significantly better studying the pros.

    I’ve tried to talk to my buddies that play CoD with me, but telling them someone has “FormaL’s gunny” or “aBeZy’s movement” just doesn’t matter to them.

    So I normally just go to r/CoDCompetitive and hate on OpTic fans

  23. The way that different systems of public administration affect the management of archaeological sites

  24. The difference between Roof Rats and Norway Rats. I brought it up once because someone told me they saw what looked like a mouse, but the size of a small rat with a long tail running in their backyard. Buddy, that was a Roof Rat.

  25. I learned about older cellphones and how they worked a while back in my past. But its been about 3 generations from those.

  26. The entire history of The Elder Scrolls universe because I’m a nerd. Never had my reason to learn it all, I just did because I was bored. Unless someone specifically asks me about TES or I mention a useless skill of mine (like this post), it doesn’t really get brought up.

  28. The differences and similarities between 1990’s Australian built Ford Falcons. I had one 10 years ago and had to fix it constantly. God, I miss it.

    Also, stuff pertaining to my job. No one asks about it outside of work and lets keep it that way.

  31. I am 99% sure I can disarm a bomb. I’m an electrical engineer for NASA and I’ve been making bootleg fireworks for over 20 years. But, well, you know…. It doesn’t come up

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