There are three philosophic riddles I should like to pose to the community, particular to my favorite sparing partner, @Jones_Elderview. However, others are welcome to offer their opinions.
What is the color of things in darkness, of fish in the depths of the sea of of the entrails in the body of a man?
A man was going to his own house followed closely by his enemy. He could, unfortunately, not go any faster than his enemy. His wife sent him a message saying, "You know there is only one bridge to our home. You also know that that the river it crosses is too deep to wade and too swift to swim. Shall I destroy the bridge to keep your enemy from crossing, or leave it so you may cross?"
By what rule do you tell a copy from the original?