Programming is a fractal of tasks. There's big stuff like how you architect a program, then down to how you write functions, and then down even further into gri

Programming is a fractal of tasks. There's big stuff like how you architect a program, then down to how you write functions, and then down even further into grit below that. And one of the joys of programing is that at each level, there's not one right answer. But even with there being different things you can optimize for, there's also a ton of poor choices that could be made as well. Practice lets you focus on one aspect at one level, and improves your ability there. If you were to practice writing a function focused on correctness, another time on readability, and lastly writing the function based on performance optimization, you would almost certainly be able to write a better function later. You've expanded your tools, you've learned new techniques, and you've consciously evaluated your work from different perspectives.