Why did Adam become inhuman?
Adam became inhuman when he became a sin creature. Scripture's account shows that God originally created him as a human being, but sin altered his standing and nature, producing bloodthirsty, destructive behavior. Mankind now reflects that same inhuman condition, mistreating its own species in ways wild animals do not.
Les explains that God created Adam as a human being, but as soon as Adam became a sin creature, he became inhuman. That condition carried into the human race: people are bloodthirsty and misuse their own species. Les contrasts this with the wild kingdom, where animals do not torment their own kind; only man does. He also points to modern examples such as torture among Middle Eastern nations, showing mankind's intrinsic capacity for bloodthirstiness.