Now that Japanese Prime Minister Junichiro Koizumi has a clear mandate for economic reform, he has wasted no time in transforming his electoral capital into practical results. Japan’s stock market – indeed, its entire economy – is poised for years of sustained growth. This growth will help to bouy the world economy, too. Last Friday, Japan’s Diet (Parliament) approved legislation that will privatize the $3 trillion held by Japan’s postal service. The postal service? In Japan, the “Yubin” is more than just mailing letters. For the last 130 years, post offices have also served as local savings banks for conservative...