Events can be divided into two categories, acts of God and acts of man. If we know why an event happened, it is an act of man and can be explained and be prevented in the future. Events we can’t explain are acts of Mother Nature or God and neither be predicted nor prevented.
Acts of terror are acts of man. No one thinks that they are acts of nature or of God. Therefore when an act of terror occurs, we should be seeking to understand why. Then and only then can we seek to prevent future acts of terror. Logically, we cannot kill all future terrorists before they kill. Understanding why terrorists act is the first step to reducing or preventing terrorist acts.