Fr8 Pup - When you ask that "stupid" question and the Capt smiles...... (and answers politely) He/she is most likely thinking of the time about 20 years earlier they asked a similar question a LOT dumber! On the other hand, if the Capt (or F/O if a 3 holer) jumps in your case and ridicules your question you might consider removing them from your preferred airmen's list.