There is always a tension in education between teaching the knowably practical and the unknowably valuable.
The former we often call “vocational education:” specific knowledge we believe students will need for specific reasons in a very specific future. That kind of knowledge is often the primary barrier around a specific career, or a specific problem. We learn it in class, or in training, or in an online tutorial, or from tinkering. It tends to be immediately useful, but ephemeral.
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