Having good friends in a Sangha and a reliable teacher can help us fact-check our assumptions and conclusions, just as the Sangha at the time of the Buddha went to Manjusri.

Going to some skilled person to see what he has learned and what he has experienced can be a great aid in our practice of Buddhism. Yes, we ultimately have to personally absorb and inculcate into our own lives the truth of the matter, but having a good friend, a Sangha support, a teacher can help us to navigate the storehouse of treasures of Buddhism.