The Lucifer Effect, written by Philp Zimbardo, was created to help people understand how good people become bad. The book begins by explaining what the Lucifer effect actually is in biblical twists, and then goes on to explain what happened in Zimbardo's experiment in Stanford prison. Lucifer "The Morning Star" was God's most trusted angel until he challenged his authority. When Lucifer challenged God's authority he was thrown into Hell, thus becoming Satan. This was the definitive transformation of good into evil. The Stanford Prison Experiment (SPE) was designed to test what drives good people to do bad things. To begin the experiment, Philp and his research team had to solve some problems before starting. First, they needed a controlled space where they could monitor the prisoners and guards without being interrupted. The solution was the basement of Stanford's psychology department. The research team spent several days creating a simulated model. First, most people are moral creatures most of the time, yet sometimes people do the wrong thing. According to Zimbardo “evil is knowing better, but doing worse”. This means that normal people act in accordance with society by obeying the norms that have been placed upon them. But sometimes people violate these rules. Second, people are moral creatures until they gain power. Power changes people, for example, the guards were normal good guys, but once you gave them the power that came with being a guard, they changed. They became violent people whose goal was to humiliate and embarrass the prisoner. Finally, situational factors can lead people to change. An example of this is the factors that caused the guards to change. The guards wanted to maintain order in the prison and at first the prisoners did not want to obey, so the guards became more cruel, thus forcing the prisoners to finally obey the rules.