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<p>I didn’t say “changing the world”. I said likely to be improving the world in some way. An engineer working on a water purification system is improving the world in some way. So is a person working on components that may lead to a battery operated car. An MIT grad who starts a company and hires people is improving the world in some way (MIT grads have founded over 25,000 companies employing over 3 million people). An MIT grad who becomes a doctor, teacher, or professor is improving the world in some way. There are many everyday normal jobs that, bit by bit, help make the world a better place.</p>