DYN from tonight's episode that, according to his driver's license, grampa is 180 pounds? also, his driver's license number is S6890145. in an abstract algebra course in college we (briefly) studied encryption in driver's license numbers (actually really interesting) made semi-famous by a prof. gallian who cracked all 50 states' codes and was able to go backwards from your driver's license number and get your name, DOB, sex, state in which the license was issued, etc. so those of you who care enough or still believe springfield is in a real state, you could find the algorithm for going backwards with the above number and all your questions will be answered........ course, it's most likely not a valid driver's license number.
cosmic.