>>>Although, I have to admit, solipsism does have it's conundrums. How is it I can read a learned dissertation on a subject that I can't understand?
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>>Just like some politicians use words they don't understand. Make a sound or imagine one (if you're reading silently). You can read quantum physics or learn defense languages if you like. You're imagining that you're learning, while you're actually inventing them as you go. It's your subconsciousness at work.
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>The problem is that I spend far too much time apparently imagining that I'm not learning. Why can't I understand the stuff I'm inventing?

Give yourself some credit. You invented all this stuff, and are so powerful (within your universe) that you've convinced yourself you don't understand it.

Happened to me a few times - I wrote code that I later couldn't understand :).