An Exact Discovery

A tourist is traveling with a guide through one of the thickest jungles
in Central America when he comes across an ancient Mayan temple. The
tourist is entranced by the temple, and asks the guide for details.

The guide states that archaeologists are carrying out excavations, and
still finding great treasures. The tourist then asks how old the temple
is.

"This temple is 1503 years old", replies the guide.

Impressed at this accurate dating, he inquires as to how he gave this
precise figure. "Easy", replies the guide, "the archaeologists said the
temple was 1500 years old, and that was three years ago"