There are only three important numbers: 0 - when there are zero of something it is not possible 1 - when there is one of something then it is possible more t

There are only three important numbers: 0 - when there are zero of something it is not possible 1 - when there is one of something then it is possible more than 1 - when there are more than one of something then there is choice, and the possibility of many, many more What is interesting is the transitions between them: when zero becomes one the impossible suddenly becomes possible, when one becomes two then suddenly there are multiple possibilities and you have to wonder if there are more... The N+1 Theory, to link back to the original article. Some interesting values, that will get really interesting if they change: 0 - number of confirmed alien civilisations 1 - number of planets known to harbour life more than 1 - number of potential partners who could be "the one"