Piper's got a point with that term. It's like your brain and body have to learn a whole new language when you're squeezed into a corner. You end up mapping the wires in your head before you even touch them, because seeing it straight on is just not an option. That mental picture you build is what keeps you from crossing the feeds, so to speak. Plus, there's a lot of feeling around and hoping you remembered the color code right (I haven't always).