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Shouldn't there be a 'think about how to do it' step?
Code to think. That said, paper and pen can do similar.
I mean more about what to do; how to achieve your main aim... to preempt step 5 if possible. Time spent on the design stage (of the idea) can save a lot more time implementing the wrong thing. Maybe it depends on the person.
He has an essay on programming languages as tools for thinking where he mentions iteratively developing a solution. With personal experience I find separating the thinking step almost paralyzing.
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