Megan Cohen being awesome:
Good ideas are polite. They fit well into the world of the project or product, have predictable word counts, are totally serviceable. They are something most people can understand or recognize, so they are welcoming and kind. They are often slightly clever, which makes you look pretty smart. And, unless you add something else to them, (a splash of color and weirdness, a gash of violence or an explosion of joy), good ideas are also completely forgettable.
To write something that will really be interesting, some of the ideas you build your world with need to be bad. They need to be awful, naughty, rude punks tearing up the city on skateboards, tagging everything in sight with spraypaint and going “You. Will. Not. Forget. Me.”