I'll sometimes catch myself, in a friendly debate, repeating something I've read, and then immediately saying "nevermind; that doesn't make any sense" I'm near

I'll sometimes catch myself, in a friendly debate, repeating something I've read, and then immediately saying "nevermind; that doesn't make any sense" I'm nearly 40 and I find I'm still "defragging" my childhood. I still come across things I've "known" for decades but haven't explicitly thought about in as long turning out to be useless garbage as soon as I try to load them back into "working" memory. Its rather disorienting. I'm afraid my subconscious might actually be using some of the stuff I haven't fixed yet.