Github user corneadoug commented on the pull request:

    https://github.com/apache/incubator-zeppelin/pull/27#issuecomment-90083040
  
    I don't think that binding from angular to scala (angularWatch) is really 
necessary, the binding would be most of the time the other way around, from 
data to visualization.
    
    Also saving the scope values on the Zeppelin context, is having multiple 
unwanted effects (If I'm right): All of the Zeppelin context is sent back with 
the angular interpreter result. Considering this also works cross-notebooks, we 
can imagine the effect of doing a binding of a query result per notebook on all 
angular interpreter response, also that result would be saved in the notebook.
    
    This is a cool demo playing with scope and allowing data sharing between 
interpreters, but without really working on allowing user to build angular 
code, it is not doing much more than what could be achieved with a println that 
would insert its data inside of html tags and  add scripts tags for some 
javascript code.
    
    However it's nice to be able to show people what could be possible with the 
idea of rich gui through angular


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