You can go through some really tightly reasoned Advaita or Madhyamika, and it bears down as a tricky taskmaster, but in the end is incapable to telling you as substantially as a blackbird that sings in the dawn, in which the stress to 'understand' is most absolutely off but the possible to in any case, without having terms, is usually open. Then you can say anything at all you like and however be ideal even when you happen to be mistaken.