title: The correctness of neural networks
body: <p>I have asked other AI folk this question, but I haven't really been given an answer that satisfied me.</p>
  
  <p>For anyone else that has programmed an artificial neural network before, how do you test for its correctness?</p>
  
  <p>I guess, another way to put it is, how does one debug the code behind a neural network?</p>