We are all guilty of it. Assigning a blanket adjective, a label, to things around us such as people, pets, even inanimate objects like cars. Surely it's a part of human nature as a means of categorizing information in our environment based on collective experience. So is it harmful to label?
Growing up, my older sister was “the smart one” and I was “the athletic one.” Our parents didn't realize it at the time, but these labels were factors of limitation for us. We behaved accordingly to our labels, and our parents accepted our behavior without question. We did not realize our true talents and interests of all things intellectual and physical until we became adults, away from such implied personality descriptions. Those labels became an excuse for our parents to accept our behavior simply because they didn’t know how to address it otherwise.