It's difficult to come up with quantifiable evidence when your method doesn't have a precise measurable definition. But good practices in a craft don't necessa

It's difficult to come up with quantifiable evidence when your method doesn't have a precise measurable definition. But good practices in a craft don't necessarily need to be quantifiable to be useful. If you learn a group of concepts on how to improve your work, you can ask yourself: "Is any of the SOLID principles applicable here?" and "Is the resulting code better if I apply them?" If you answer "yes" to both questions, you're using the principles in practice to improve the code without having empirical proof that they worked, just gut instinct.