Tesla and SpaceX CEO Elon Musk has reignited the debate over the value of college education, arguing that degrees are no longer necessary for learning as knowledge is now freely available online."You don't need college to learn stuff. Everything is available basically for free. You can learn anything you want for free," Musk said.Advertisement While acknowledging that colleges serve a purpose, Musk argued that it is less about education and more about demonstrating discipline. "There is a value that colleges have, which is seeing whether somebody can work hard at something, including a bunch of annoying homework assignments, and still...