Are You Smarter Than A Fifth Grader?

Someone at the Smithsonian isn't.

ALLEGAN, Mich. (al-AP) -- 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 ...

So Kevin Stufflebeam took his son to the museum's information desk to report Kenton's concern on a comment form.

Last week, the boy received a letter from the museum acknowledging that his observation was "spot on."

"The Precambrian is a dimensionless unit of time, which embraces all the time between the origin of Earth and the beginning of the Cambrian Period of geologic time," the letter says.