I will make a metaphor with a portable brainwave detector– “Thinkgear”.

  The metaphor is about the “feed back loop of individual life”, there are two kinds of feedback loop, positive and negative. The positive feedback will try to play appropriate music to enhance your meditation experience with the Thinkgear detector, while the negative feedback will do the opposite. The feedbacks  simulate how the world treat a individual from time to time— the harder you try or pursue something, the more you achieve, or  in the negative feedback loop, the more you want, the more  you get from the opposite side. The feedbacks will be presented in graphics and sounds, according to the data collected from the brainwave detector. I will do more research on how to make the data transfer accurate, and also look for appropriate graphical effects.