That way, when an anomalous result appears,
What is this thing you call an "anomalous result"? This can't happen to me. That's implying that I can't see an obvious problem before it happens, and that CANNOT be true.
[end outraged voice]
One of the things that you learn with experience is that you can actually be wrong. It's one of the things that a lot of people these days have to actually learn, because they haven't learned it in their pre-teen or teenage years.
For the last several years I've been introducing "Bright Young Things", recently recruited to a major company to work in managing the acquisition of data from the Real World. They too, despite being bright people, have to learn that they don't know everything, and that the Real World has things going on that they don't know about, and don't understand.
It's an education for them.