Different methods are more and less likely to lead one to the truth (in a given universe). I see little harm in calling those less likely arts dark. Rhetoric is surely grey at the lightest.
Presentation will influence how people receive your ideas no matter what. If you present good ideas badly, you’ll bias people away from the truth just as much as if you presented bad ideas cleverly.
Different methods are more and less likely to lead one to the truth (in a given universe). I see little harm in calling those less likely arts dark. Rhetoric is surely grey at the lightest.
Presentation will influence how people receive your ideas no matter what. If you present good ideas badly, you’ll bias people away from the truth just as much as if you presented bad ideas cleverly.