My favorite subject when it comes to riddle guys is CRM. Either way, they f' it up. If they prattle on and display their talent for knowing everything, the captain does one of two things; he either tunes them out because he can't stand listening to their bullsh!t, "Hey, look over there, that storm has reached the dissipating stage as evidenced by the by the downdraft and precip intensity at the ground weakening." Net CRM result? Completely shot. OR, the captain, after days of listening to the riddle 'tard prattle on about stupid stuff screams at them and they tune out, "New altimeter setting is two-niner-niner-niner (up from 29.98), pressure is rising, winds should be more pronounced from our right." (to which the captain screams "SHUT THE F' UP!".) Net CRM result? Completely shot.
So, the moral of the story? CRM with a riddle guy is a lot like a good case of the squirts, a painfully straining experience.