Is fifth-grader Kenton Stufflebeam smarter than the Smithsonian? On a winter break trip with his family to the Smithsonian Institution’s National Museum of Natural History, the 11-year-old southwestern Michigan boy noticed that a notation, in bold lettering, mistakenly identified the Precambrian as an era.

Since it opened in 1981, millions of people have paraded past the museum’s Tower of Time, a display involving prehistoric time. Kenton was the first to point out the error.

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