This has nothing to do with your intelligence. SEO works, just because you can not seem to figure it out doesn't mean that the whole thing doesn't exist.
In time, you'll find your way, Jason. Everyone does or flounders.
Also, I've read some of your articles, and it's pretty obvious why they aren't ranking on search engines. Keep trying, Jason. Your writing will get better over time as long as you, you know, try.