The middle finger is often considered the "power finger."
Here's why:
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Central Position: The middle finger's location at the center of the hand gives it a sense of balance and centrality. As noted, it is "central to the hand and prominent in length."
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Length and Prominence: Its greater length compared to other fingers contributes to its perceived prominence and, symbolically, its power.
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Associations: While not universally accepted, some associate the middle finger with feelings of strength, control, and even assertiveness.
While the concept of a "power finger" is largely symbolic and not based on scientific fact, the middle finger's physical attributes and cultural interpretations contribute to its association with power and balance.