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Learning algebra isn’t about acquiring a specific tool; it’s about building up a mental muscle that will come in handy elsewhere. You don’t go to the gym because you’re interested in learning how to operate a StairMaster; you go to a gym because operating a StairMaster does something laudable to your body, the benefits of which you enjoy during the many hours of the week when you’re not on a StairMaster.
-Steven Johnson, Everything Bad Is Good for You
