title: mobX pass the props only layer by layer
body: <p>Last night, I saw some argument between redux &amp; mobX  in Twitter. </p>
  
  <p>I spent a couple of hours to study mobX. In my opinion, redux is awesome, and Dan is my idol. So I think redux is fast than mobX.</p>
  
  <p>I saw the mobx-react-todomvc. I try to modify it, and I find out it pass the props only layer by layer. It is my problem?</p>