There is a media ritual when there is a big lottery prize looming that involves an interview with a “number expert” who can tell you what the “lucky” numbers are, ie those which have come up most often. The number expert can protest until blue in the face that every number, every time, is equally likely or unlikely, by chance, to appear. Makes no difference. “What are the lucky numbers?” will be asked, over and over. When the winner is announced comes the trip to the “lucky” outlet that sold the ticket. This outlet, is the suggestion, will be worth buying from again. But it won’t be of course, every outlet is equally likely, or unlikely to sell the next winning ticket. But the use of “luck” and the suggestion that some people are “lucky” is encouraging belief in the paranormal on the one hand, and belief in people being “rewarded” by a god on the other. There is no luck, there is only chance.
Whenever someone reaches a milestone like 100 years another narrative comes into play – “to what do you attribute your long life?” Well, in reality their long life can only be attributed to a chance allocation of pretty good DNA and a lot of luck through the decades, they have reached an advanced age by chance, just the far tail of a normal distribution of age at death – a few die very young, a few die very old, most die in between. Life’s a lottery and then you die.
Road accidents too. The media (and politicians) tend to react to an individual accident by blaming someone or something for it. But for a given number of cars on the roads, and therefore for a given number of chances of them coming into contact with each other or some object beside the road, there will be, by chance, a given number of accidents, and you, by chance, may be one of them. And those accidents will range, by chance, from those where a car and its occupants are scarcely dented, to major pile-ups and death and everything in between.

The inability to recognise or accept chance events has led to the idea of “miracles” raising its ugly and misleading head again. In any major accident or catastrophic natural event involving many people, there will be, by chance, quite often, survivors, perhaps only one survivor, perhaps two or three. Whether it is plane crash or train crash, tsunami or earthquake, the fact that many people die and one or more don’t is always headlined and described as a “miracle”. People don’t want to believe in chance, want to believe that good things happen to those who deserve them, that there is a “reason” for a survival (other than a reason involving a chance sequence of events or spatial relationships), and that if they, I suppose, were involved in such a disaster then they would be the ones walking out of the cloud of smoke, the wall of water. If only they knew what the secret was. And there will be plenty of people to tell them – money up front.
The constant reiteration of the “miracle survival” nonsense by television reporters encourages this sort of irrational thinking and comes full circle when they almost always, as the punch line to the survivor story, say to them “You should buy a lottery ticket”, taking the failure of logic full circle. The suggestion, of course is that having walked away from a plane crash the person has been blessed with good luck, and that while the “effect” lasts the person should take advantage of the residual glow of good vibrations and have them influence the way that lottery balls tumble, chaotically, randomly, in a big glass ball, in order to create a sequence of numbers that match, miraculously, with those on a piece of paper that the lucky person has bought. Does the reporter really believe this? Does the audience?

The alternative narrative is that some people are subject to “bad luck”, or, in the religious narrative, have behaved or believed (or failed to believe) in such a way that they will be magically propelled into path of speeding car or train, will be crushed by landslide, eaten by shark, have a roof tile land on their head, catch, at the last moment (perhaps by an exchange of places with another, lucky, person), a plane that then crashes. In these cases the event is deemed to be so rare that being killed by it must have a cause, an explanation, people “doomed” by some unexplained mechanism of heavenly forces. But all such events become possible given 7 billion people on a planet as small as ours. And all of these bad luck narratives, the “what were the chances” scenario, depend on a misunderstanding of the nature of chance. What are the chances that “of all the gin joints in all the towns in all the world, she walks into mine” so that Humphrey and Ingrid meet? Pretty good actually. I mean if you multiplied the number of gin joints by the number of people in the world at the time (3 billion?) the odds look astronomical. But only because Rick has decided after the event which has already taken place that this was a significant meeting. If you were to ask what is the chance of any man and any woman meeting in a gin joint somewhere the odds are, well, 100%, any night of the week. Since Rick was in the bar every night, it was the most popular bar in Casablanca, and there were few American women in the city, the chances of the lovely Ms Bergman walking into his gin joint were also very very good.

So there are many things that people, with the guidance of the media and religious leaders, think are not chance events which are in fact sheer chance. On the other hand people think some things are chance which are not. The creationists among us are constantly asking how you can “assemble a 747″ by chance in a “junkyard”, how “random mutations” could give rise to human beings from “primordial ooze”. But evolution works much as Bergman found Bogart, the odds aren’t some multiplication of the remote chances of single events with those of other single events, but a gradual refinement over time. Imagine that in Rick’s bar gambling was going on (you’d be shocked, shocked, I know). And they were playing a kind of poker in which each player kept one good card and discarded four and picked up a new four, and then kept the best of those and discarded three, and picked up three new ones and so on. You would eventually finish up with some very good hands, all round the table. Small chance on any one card, but chances improved as you discard and pick up, discard and pick up.

Drive by shootings are presented by the media as if they are totally random events, that at any moment your house, chosen at random by gangsters, will be peppered with bullets. What are the odds? Number of houses in Sydney, say, divided into the number of shootings? But rarely, it turns out, is the shooting actually random as distinct from being aimed at a rival bike gang, rival drug dealer, loan defaulter, love triangle rival. Not random, targeted. Chances of a small number of people being shot at, very high; chances of the rest of Sydney houses getting bullets through their front wall, virtually nil. Shark attacks, same treatment in media, reality that the number of attacks is tiny, the great bulk of them not “attacks” but accidents, and the result of risky behaviour by the swimmer or surfer, not random moments of doom.
When there are stories of unethical behaviour by a corporation – declaring bankruptcy with no money left for worker’s entitlements; dumping pollutants into a creek; moving overseas to evade tax; selling goods known to be harmful; funding political parties to obtain favourable treatment; sacking workers and outsourcing overseas; cutting prices to farmers – they are always treated as if these are singular events, a bad apple, no historical context, no implications for regulation or political action. In fact such behaviour is not random but is a direct consequence of laissez faire unregulated capitalism as practised in the last 20 years or so.
Finally climate is portrayed by deniers as being just a sequence of random fluctuations with no meaning or implication for action now or disaster in the future. The reality is that the ever rising trend line of temperatures, and the ever increasing consequences seen in melting ice, acidifying oceans, moving species, is what tells us we are in trouble.
James Randi said “To recognize that nature has neither a preference for our species nor a bias against it takes only a little courage”. Takes a lot of courage actually, more than politicians or religious leaders possess. Now, if only we could give the media courage to call random events for what they are and talk about the causes of non-random events. They have been getting this precisely back to front.