the lesson here is don't refactor known good code. when you do so you introduce a risk of breaking it through lack of understanding. more generally it introdu

the lesson here is don't refactor known good code. when you do so you introduce a risk of breaking it through lack of understanding. more generally it introduces a potential point of failure when you refactor code. as with all things that introduce the potential for bugs and errors it should only be done if that chance seems less than the chance that it will fix a known issue of greater severity...