[icegreentea]

As an engineer, you should also be aware of when discovering the basis of the tweak is crucial. Discovering that tweaking the beam bending equations gives a much better fit to your test results on the beams you would like to use for your building is one example.

In some cases, these tweaks provide better results for a small range of conditions. That small range may be big enough for you (given your task at hand), but without understanding the tweak, you can't actually know. So care must be taken.