An earnest defense of America's silliest holiday: Groundhog Day

As a kid growing up in Pennsylvania, there are a few state treasures you come to revere, like Tastykake's Butterscotch Krimpets, a 64-pack of Crayola crayons with a sharpener on the back of the box, soft pretzels and Hershey's chocolate. But no locally-produced treat could touch the majesty of the …