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Wish I could upvote more.

Similarly, I always like to say you should plan to write (at least) two versions/iterations of everything. The first one bottom up, to discover what problem you're solving, and the second top down, once you know the problem.

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Or, as Fred Brooks wrote in "The Mythical Man Month" (1976): "plan to throw one away; you will, anyhow."[0]

[0] https://en.wikiquote.org/wiki/Fred_Brooks

[1] https://wiki.c2.com/?PlanToThrowOneAway

That’s great if you have the time for it but a bit impractical to write, architect, then refactor.

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