Article URL: https://www.justinmath.com/the-necessity-of-grinding-through-concrete-examples-before-jumping-up-a-level-of-abstraction/
Comments URL: https://news.ycombinator.com/item?id=50013126
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Sharpening a shovel can make digging easier, but getting the edge right matters. Here's what to know before you start filing or grinding the blade.
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