Those wearing the blindfold seldom know it, for if they did, they'd be stupid too.
The standardization of common names is a requisite for the effective communication and interaction within and among scientists, as well as the general public.
You may collect a salamander and call it a Carolina Mountain Dusky Salamander (sensu Crother et al. 2000) or alternatively, a Carolina Dusky Salamander (sensu Collins, 1997). By using a standardized English common name, others can be assured that you believe that the specimen is presently assigned to the species Desmognathus carolinensis. Should you choose use another name, others may very well falter in your ambiguity.