http://www.bbc.co.uk/science/humanbody/mind/surveys/smiles/index.shtml
Everyone can tell the difference between a fake smile and a real one, right? With this experiment from the BBC, your abilities to spot a genuine grin are put to the test - and the results may surprise you. As it turns out, those smiles everyone flashes at you might not be due to your overwhelming charisma.
- GRANT RITTER