That sounds like his problem. [Keith isn't the best at sympathy ... or parsing out the reality of a situation. He assumes that Peter was acting like an infected. Stiles wouldn't have stabbed him with a tranquilizer otherwise.

Right?

With Keith, he has a hard time thinking outside of the box once he's drawn a conclusion.]

Look, how are you planning to do it better? There's a reason why it failed before, right?