Right now, your brain is recognizing the shapes of these letters, analyzing their meaning and holding a stream of thought together—all on about 20 watts of power. That’s roughly what it takes to run a light bulb.Right now, your brain is recognizing the shapes of these letters, analyzing their meaning and holding a stream of thought together—all on about 20 watts of power. That’s roughly what it takes to run a light bulb.[#item_full_content]