Color Blind

A man is driving while listening to the radio when suddenly the radio goes quiet. He then decides to leave the road and throw himself off a cliff.

If the wind hadn't blown so hard that night, Angela would still be alive.

Sherlock Holmes was walking down a corridor. Suddenly he heard a woman shout, "Please, John, don't kill me!" A gunshot rang out. Holmes rushed into the room. In one corner lay a dead woman and a gun. In another corner stood a postman, a lawyer, and an accountant. Sherlock looked at them, approached the postman, and grabbed him. "I'm arresting you for killing this woman." Indeed, it was the postman who killed this woman, but how could Holmes know that?

One day a man received a package in the mail. Inside, carefully wrapped, was a human arm. He examined it and then rewrapped and sent it to someone else. The second person also carefully examined the arm before taking it to the forest and burying it. Why did they do this?