Eye twitching is causes blepharospasm. There are many causes of eye twitching. The common ones are alcohol, caffeine, fatigue, lack of sleep, physical exertion, smoking, stress, and irritation to the eye or eyelid. Chronic causes include inflamed eyelids, dry eyes, light sensitivity, and pink eye.
Deception involves acting in such a way which leads another person to believe something, that you, yourself, do not believe to be true (see Ekman; Miller & Stiff). The following example helps illustrate this point: Brad and Spencer. Brad and Spencer are both part of the same circle of friends.
This is usually the best way to determine if you are misleading someone, regardless of your intent. As you can see, this definition of deception is very broad; it encompasses a wide range of behaviors. But, there is a good reason for viewing deception this way. When thinking about our own deceptive behavior, we like to think in very narrow and technical terms â like telling someone a blatant falsehood.