“And this over here†croaked the 90 year old museum tour guide, “is a fossil 4 million and 69 years old, on it’s left you can see another fossil that’s 2 million and 69 years old.â€
“Wow! That’s really fascinating,†said a fellow in the audience, “how can you age it so accurately to the year?â€
“Well that’s simple†answered the old chap, “It was two million years old when I started working here 69 years ago.â€