A blind deer came to the seaside to eat grass. He watched the landing land with his good eyes to guard against the hunter's attack, and his blind eyes pointed to the sea. He thinks there will be no danger beyond the sea. Unexpectedly, someone passed by here by boat from the sea, saw the deer and shot it with an arrow. When he died, he said to himself, "I'm really unlucky." I am on guard against the landing side, but the maritime side I trust has brought me disaster. " The story is that the facts are often contrary to our expectations. We think dangerous things are safe, but we think safe things are more dangerous.