Claim: Scooby-Doo focuses on the fundamentally unsolvable nature of mysteries.
Evidence: This Saturday-morning cartoon series featured four teenagers -- Fred Jones , Daphne Blake , Velma Dinkley , and Norville `` Shaggy '' Rogers -- and their talking brown Great Dane named Scooby-Doo , who solve mysteries involving supposedly supernatural creatures through a series of antics and missteps.