Exclude Grammar, "Ideas about ideas"

I decided to post my free writing from Monday's class.

Ideas are like bricks. Sometimes if you throw them out there too fast or too hard somebody can get hurt. Bricks are like ideas. They don't come from the "no where". You never REALLY know where they come from but you know that they build things. Buildings aren't really like bricks or ideas but their made out of them. I'm not made out of bricks, this is just an idea, I think. Sinks break when people aren't even using them, so what made them break? Ideas are like sinks. They come when your not even trying to break them, but then again bricks aren't easy to break. What happens when you put a brick in a sink? Whick one breaks and which one sinks, not floats? Why do some boats float when they carry bricks, but sink when they're made out of bricks? I guess ideas are a little like boats; do whatever makes them float. Unless your ideas are like submarines which means they sink and float. Then do one or the other but not both. Both come from ideas but ideas don't come from boats. Unless you have an idea when your on a boat, then I don't know.