the elderly grandfather was walking on the beach with his young grandson. as they walked, the grandson would periodically stop to pick up beached starfish and toss them back into the ocean.
the grandfather leaned towards his grandchild and said "my child, your gesture is touching but will make no difference. do you know how wide the oceans are, how vast the number of beaches, and how numerous are the starfish that become trapped on the shore?"
the child looked up as he prepared to toss yet another starfish back into the ocean and said, "yes grandfather, but it sure makes a difference to this one!"