 When a competitor in the pentathlon unintentionally struck Epitimus of Pharsalus with a javelin and killed him, he [i.e., Pericles] spent a whole day with Protagoras examining the difficulty whether, according to the most correct reasoning, it was the javelin, or the man who throw it, or the umpires, that should be considered responsible for this unfortunate event. (80A10 DK) 