/**
  * Check that the diagnosis is correct //TODO: Make this general for randomly ordered diags
  *
  * @param key the key to the diagnosis
  * @return
  */
 public boolean checkDiag(String key) {
   if (key.equals("0")) {
     hist.addAnswer(key, true);
     hist.save();
     return true;
   } else {
     hist.addAnswer(key, false);
     return false;
   }
 }