Are you sure?
Yes I am.
Where you there?
No, but I don't need to be in order to determine ages.
How do you know?
Don't have time to look at your silly links, just answer the questions, if you can, which I doubt. Don't try sending me all over the net to do yur homework, if yu can't answer the question jsut say "Da, I don't know... but, I know my great, great granddaddy 2 zillion times removed was either a rock, or a monkey."