This reinforces the old saying. "Don't take down the fence until you know why it was put up." I wish more computer science programs taught this as an important

This reinforces the old saying. "Don't take down the fence until you know why it was put up." I wish more computer science programs taught this as an important principle. Too many people today assume that if something is newer, it is necessarily better, and rush to rewrite or replace things that had been working well, and would continue to do so, with new and untested and unproven replacements.