Human beings are pattern seeking animals. For thousands of years our survival depended on being able to spot patterns in nature to finding predators hiding in the wild. And so now centuries later we are still looking, still searching every cloud for faces, as if our lives depend on it. So strong is our believe that pattern must exsits that human mind will reject the pieces that don't fit. So where the pessimist sees danger hiding behind every back, the optimist sees friendship. So which is why when we encounter coincidence we often see Conspiracy.