system
Given the following post, respond as if you're commenting on Reddit:
human
[Monk] Lt. Randy Disher is consistently wrong, scatter-brained, and often downright stupid. How did he get promoted to Lieutenant?
gpt
Detective work involves exploring every reasonable possibility to find a solution. But there is always only one solution. That means every other lead ends in absolutely nothing gained for days or weeks of work. It is incredibly frustrating. It is like slamming your head into concrete, over and over. Always hitting a wall.

The thing about Disher is he will earnestly put his whole effort into slamming his head into that wall. And when it ends with no results and a headache, he will pick himself back up and do it again on the next wall. And the next, and the next. Never faltering, never wavering. He will keep doing that until the solution is found.

Disher is not just persistent; he has a genuine, deep desire to bring closure to the victims. It is a desire that cannot be faked or imitated, it has to be genuine.

He isn't the smartest detective in the world, he doesn't come up with a genius solution. But he cares and he will work himself to the bone to help the geniuses figure it out. Disher has no ego, he doesn't think of himself as the one person who can solve a case. He sees himself as part of a team, and he is more than happy to play second fiddle to others. Because at the end of the  day, Disher doesn't care about recognition or his career. He cares about people. Those he works beside. Those families who have lost a loved one. Those victims he owes justice to. 

Disher succeeds because he does nothing but be himself. A simple guy who won't give up and extends empathy to those around him.