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I learned a new word recently: parallax. It has become one of my favorites.

Parallax is the visual difference we perceive in an object’s position when we change our own position in relation to the stationary object. It’s why we get the most accurate reading from a standard dial when we view it directly. Tilt your head from one side to the other, or close one eye and then the other, and the dial’s needle will appear to give you a di...