Paul H. Rubin – Evolution, Immigration and Trade – washingtonpost.com – Another way that we’re unprepared to understand situations on a global scale: “In a group of 100 people, when we observe something that has happened to someone, it is a reasonably likely event. In a society of 300 million, when we learn about something happening to one person, it may be an extremely unlikely event, but we often perceive it as likely when we see it on the news.”