Sometimes I like to think back to the olden days, when it was easier for politicians to tell a good old-fashioned fib. Think of the age of the majestic woolly mammoth, for instance. Trudging along on a typical Ice Age morning, a caveman named Og could blithely tell his rivals Garglon and Thag that he had just run an ultra-marathon, clubbed the neighborhood’s fiercest saber-tooth tiger, and invented the Internet, all in one morning.