A person is known by their deeds. Without a nomenclature, it is much harder to organize thoughts. An artist always signs his work Don't use other people's work without permission and attribution. A cat cannot cover up what it did on the linoleum. Look before you leap.
Dry runs avoid public embarrassment.
Properly done, training is always turns a profit. Pure research usually yields a profit. Never experiment on production data. Make a backup before the catastrophe It is too late to lock the barn door after the horses are gone. The craftsman cares for his tools.