As my readers well know, even though this blog centers primarily on how people think, every now and then I like to throw in a tidbit or two concerning key figures and events in American History. Not only is history my second biggest passion after psychology, but at the end of the day, both subjects are more entwined than most people realize. Historians aim to understand the rationale behind the decisions that Thomas Jefferson, Martin Luther King Jr., and other figures have made, dissecting everything from their upbringing and social relationships to their innermost fears and aspirations. And while historians delve into these men and women's personalities, psychologists -- for their part -- cannot paint a full picture of the individuals without essential historical facts like when they were born, the places they lived throughout their lives, etc. The month of February has witnessed countless important events over the past 200 or so years, two of which occurred 37 years apa...