Allow me to deviate from the theme of this blog with this personal sidebar observation.
During approximately 30 years as a professor, I tried to practice my belief that what students most want and deserve from us professors is access not only to our content knowledgeable heads, but also to our emotional intellects, as personally revealed by our interest in their self-discovery and well being. I was reminded of that belief when I watched (and now commend to you to watch via YouTube) the "last lecture of Randy Pausch," a 46-year-old Carnegie Mellon professor who is dying prematurely of pancreatic cancer. Professor Pausch's last lecture is a moving testament to taking seriously one's dreams, obligations, colleagues, and, students (especially students) without taking oneself too seriously -- and making the world a better place in doing so. Kudos to Professor Pausch and those who invested themselves in him. Those investments have already generated spectacular returns and will continue to compound for generations to come!