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\textbf{Bill Gates Goes to College}  Bill Gates has some thoughts about education.\\  Specifically, \href{http://www.gatesnotes.com/Education/Colleges-Without-Walls-Arizona}{how its future might look}.  Gates recently visited Arizona, where Rio Salado College and University of Phoenix are broadening access to education for hundreds of thousands. thousands.\\  Access is improved by: \begin{enumerate}  \item{\textbf{low costs} (compare Rio Salado's \$84/credit-hour vs 2011 averages of \href{http://www.brighthub.com/education/college/articles/83976.aspx}{\$250/credit-hour} for in-state, public tuition),}  \item{\textbf{flexibility} (many classes start new sessions every week),}