There is a sort of intellect that seeks to find the good in everything and only when that is impossible reject. This is something I more or less picked up from the sages and later after learning the approach of Rav Nahman this was emphasized even more so.
The exact statement of the sages I forgot but it goes more or less along the lines that a wise person seeks to settle the words of the wise. With Rav Nahman you see this emphasized even more so. Someone aksed him for a "segula" [a sort of supernatural way] of getting help to merit to be "Masmid" in Torah [i.e. to learn Torah all the time.] Rav Nahman replied that is by no speaking lashon hara about anyone. [Of course besides that Torah lesson 282 is famous about judging every person on the scales of merit.]
But it was pointed out by David Bronson that the way an engineer thinks is to find fault. What can possibly go wrong with this design he asks himself or herself all the time.
To me it see that you need both and that this kind of duality is reflected in almost every part of reality. The electron shows properties of a particle and a wave.
[The ancient Greeks noticed this in Heraclitus about opposites.]
