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How can you know your code works? That’s easy. Test it.
The true professional knows that delivering function at the expense of structure is a fool’s errand. It is the structure of your code that allows it to be flexible. If you compromise the structure, you compromise the future.
The only way to prove that your software is easy to change is to make easy changes to it. And when you find that the changes aren’t as easy as you thought, you refine the design so that the next change is easier.
When you cannot concentrate and focus sufficiently, the code you write will be wrong. It will have bugs. It will have the wrong structure. It will be opaque and convoluted. It will not solve the customers’ real problems. In short, it will have to be reworked or redone. Working while distracted creates waste.
Choose disciplines that you feel comfortable following in a crisis. Then follow them all the time.
