It is an obvious truth we too often forget. At the Albert Einstein Memorial, on the grounds of the National Academy of Sciences in Washington, D.C., an explanatory sign states a simple fact that refutes the argument President Barack Obama's science adviser once made for redistributing wealth and limiting human population so as to save the human race from a poverty he claimed must inevitably intensify as our numbers increase. "At Einstein's feet lies a circular sky map representing the planets, sun, moon, and stars, positioned as observed by astronomers from the U.S. Naval Observatory at noon on the day...