[proginthebox]

It's ridiculously easy to apply a method which is not applicable if you are not at least a little aware of the theory behind it. You will get wrong results and you will never know why. The wrong results might never be found out because the impact is so complicated that you cannot even point out the source. I have sadly seen this happen too often in various places. But because our other systems are robust enough, this issue (even though it affects things) is not really heeded to until something really catastrophic happens (like 2008 crash).