They serve a powerful purpose for dentist, who are paid to extract them. Otherwise, wisdom teeth are commonly regarded as being useless to modern man. But because nature rarely provide us with useless body parts, a little investigations yields a more satisfying answer.
Primitive man ate meats so tough that they make beef jerky feel like mashed potatoes in comparison. The extra molars in the back of the mouth, now known as wisdom teeth, undoubtedly aided in our ancestors' mastication.
As humans have evolved, their brains have gotten progressively larger and the face position has moved farther downwards and inward. About the time that primitive man started walking in an upright position, other changes in the facial structure occurred. The protruding jawbone gradually moved backwards, making the jaw itself shorter and leaving no room for the wisdom teeth. Most people's jaws itself shorter and leaving no room for the wisdom teeth. Most people's jaws no longer have the capacity to accommodate these now superfluous teeth.
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