Smiles in the workplace: what do they really mean?
Humanity has long accepted the smile to be culturally universal: no matter where you come from, what language you speak, or what your beliefs are, smiles were understood to be a uniform display of happiness and joy. The Duchenne marker in particular, which involves the crinkling of the eyes, was thought to be the ultimate involuntary portrayal of genuine delight. However, the beauty of science means that all things -- even those that were previously held to be absolute truths […]