From: utzoo!decvax!harpo!eagle!mhtsa!alice!rabbit!ark Newsgroups: net.jokes Title: mathematician, physicist, engineer Article-I.D.: rabbit.1068 Posted: Wed Jan 19 11:05:11 1983 Received: Fri Jan 21 06:49:43 1983 A mathematician, a physicist, and an engineer were on a train riding through Wisconsin when they saw a white cow. Said the engineer: "I didn't know there were white cows in Wisconsin." The physicist said: "You don't. You only know that there is **a** white cow in Wisconsin." The mathematician said: "No, all you know is that there is at least one cow in Wisconsin that is white on at least one side."