Anyone else shut down whenever the topic of conversation moves to something you deem too intelligent?

I'm going to be honest I'm not an academic nor did I do fabulous in school nor finish it. With that being said I tend to shut down and quit talking when the conversation turns into knowledge dump nerd fest. I couldn't tell you my opinion on some science thing because I have no idea what that thing even is. I don't know what some political thing means or is so I can't say anything because I don't understand half the words being used in it. To this day I don't understand the letters I get sent to me about insurance or financial stuff no matter how many times i read them over. I usually have to ask someone else to tell me what it means. The whole thing derails once I stumble on a word I don't know or a topic I don't understand or an idea or concept I don't understand. I've always been on the slower side of getting things to stick in my brain. Probably why I wasn't the best in school because it took me longer to process and understand somethings. maybe I have a learning disability who the hell knows.