Years from now, historians may regard the 2008 election of Barack Obama as an inscrutable and disturbing phenomenon, a baffling breed of mass hysteria akin perhaps to the witch craze of the Middle Ages. How, they will wonder, did a man so devoid of professional accomplishment beguile so many into thinking he could manage the world's largest economy, direct the world's most powerful military, execute the world's most consequential job? Imagine a future historian examining Obama's pre-presidential life: ushered into and through the Ivy League despite unremarkable grades and test scores along the way; a cushy non-job as a...