And the sad thing is, it's the opposite of what they teach you in school. And only by practice, and making the mistake enough, did I reached the same conclusio

And the sad thing is, it's the opposite of what they teach you in school. And only by practice, and making the mistake enough, did I reached the same conclusion as you. Although there is a balance, as sometime you know your future requirements, and making an abstraction right away may save you some time. It's hard to teach experience and the ability to evaluate something vaguely.