Many people would say climate change. This is indeed a very serious problem and it has been well publicised with various action groups emphasising the issue. There is a bigger problem. I believe that the biggest problem is the inadequacy of our thinking. This is much greater problem for two reasons. First, better thinking would enable us to tackle the climate problem. Second, no one knows it is a problem so nothing is done about it. We are very satisfied and complacent with our existing thinking and we even use that to judge the adequacy of our thinking.

Edward de Bono