Precision? If you want precision change your name to "4151.8828125 Hertz". No, with some words and term preciseness counts. For example "femur" rather than "leg bone". With words such as "theory" or "evolution" such precision is folly. As foolish as demanding that your gas station meter the pumped gas to the nano-liter.
I fail to see the appropriateness of your analogy.
The term 'evolution' has a very specific meaning within a given field of study. The word in question, 'devolution', as used by non-scientists has no meaning other than as shorthand for a reversal of adaptation.