Ed, are you sure he isn't pulling your leg? I mean, if he knows there are 7-day sets (which you don't exactly see every day) then he must know more than he lets on?
Maybe, since he knows you're fairly new at the hobby, he's low keying it so you don't ask him to hone your razor :eek:.
Or you could be right... he just isn't interested... he does a single pass shave and is satisfied that the result is "as good as a mach3". :roflmao