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Before all the laws of software, before the purpose of software, before the science of software design itself, there is a singular fact that determines the success or failure of a software developer. This fact makes the difference between the senior engineer who can seem to pick up new languages in a day and the junior developer who struggles for ten years just to get a paycheck, programming other people’s designs and never improving enough to get a promotion. It differentiates the poor programmers from the good ones, the good programmers from the great ones, and the great ones from the “rockstar” programmers who have founded whole multi-billion dollar empires on their skill.
It’s not anything complicated, and it’s not something that’s hard to know. It’s not something that you can only do if you’re born with a special talent or a “magical ability to program well.” There is nothing about the nature of the individual that determines whether or not they will become an excellent programmer or a poor one.
There is only one, singular fact:
The better you understand what you are doing, the better you will do it.