A man calls to a waiter, "There's a fly in my tea".
"I will bring you a fresh cup of tea," says the waiter.
After a few moments the man calls out, "This is the same cup of tea!"
How did he know?
"I will bring you a fresh cup of tea," says the waiter.
After a few moments the man calls out, "This is the same cup of tea!"
How did he know?