I go with "Trust, but verify" because if you don't trust your provider, why do you keep them? Everyone makes mistakes and no professional can be 100% up on all the latest research. Frankly, for something like PCa, if you are not being treated at a major center (MSK, JH, Mayo, MDA, etc.) you have to follow and research everything that is being suggested. Far too many surgeons push surgery--I wonder why! Likewise onco and radiation.