Ever since Thomas Jefferson championed the “yeoman farmer,” Americans across the political spectrum have romanticized small businesses. Politicians tout Mom-and-Pop companies as the backbone of the economy. But, if you run the numbers, small businesses don’t live up to the hype, according to economist Robert D. Atkinson, co-author of the book “Big is Beautiful: Debunking the Myth of Small Business.” Atkinson says that we should take a size-neutral approach to regulating businesses.