I have the ability to understand and learn practically anything, without limit. Mechanics are my main interest though. From a simple lawnmower, to the space shuttle, to the big-bang theory, all these processes come naturally to me. It's almost common sense. My brain is wired to automatically recognize ,why and how, things work, and find explanations for just about anything imaginable. If I am interested in something, it makes it that much easier to understand, but I often learn things unintentionally, by exposure. My only problem, is that I have trouble shutting down, when it's time to relax or sleep. Like spider-man said, "my gift is my curse". I'm willing to live with that. 
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Those who speak, don't know.
Those who know, don't speak.