A class of things they don’t teach you in STEM school (and should).pic.twitter.com/ec6bqixpM3
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Relatedly: linear algebra would be *much* easier if, at the beginning of the course, the professor explained that it has only a couple of ideas, explained over and over in different terms.https://twitter.com/Meaningness/status/947639049413468160 …
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Only problem with this is that everyone comes out thinking it's a slightly different couple of ideas (the list in that post is great at explaining why)
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Isn’t that the reason it would be good to say this up front? “These dozen things are all the same thing, so learn one of them thoroughly first, then understand how the others are it in disguise, and when to use each.”
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Yeah, think you're right. Sure I had some actual thoughts on this this morning, but a migraine has wiped any trace of brainpower I had :(
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I think most naturally in terms of the parallelopiped made by the column vectors but that is bad for some things...
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... there's no obvious geometric interpretation of the inverse, for example, which always annoys me
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