Yep. It's like sparring. Need to be ready for all kinds of attacks, and ultimately, if you lose...you still win, as long as the main goal is arriving at the truth. Funny how the most "stubborn" are often the most open to new ideas. This is because they have fought so hard to purify and prove the ones they hold, and are stubborn as hell about destroying the faulty ones so they can become even more unassailable, and in touch with the truth.