Answer:
An archaeologist unearths a coin bearing the inscription "57BC". How does he instantly know that it's a forgery?
idk
No is to negative as yes is to...?
How can you throw a ball 20 meters, and have it come back to you without hitting anything?
What is as big as you are and yet does not weigh anything?
I am the fountain from which no one can drink. For many I am considered a necessary link. Like gold to all I am sought for, but my continued death brings wealth for all to want more.