A boy was walking along the beach, picking up starfish that had been washed ashore, and throwing them back into the ocean.
A man came up to the boy and asked what he was doing.
The boy said, "I'm throwing starfish back into the ocean. They will die if they stay out of the water."
The man remarked, "But there are hundreds of starfish! What possible difference does it make?"
The boy smiled, looked at the starfish in his hand, and flung it into the ocean.
He replied, "It makes a difference to THIS one."