I think it would be fair to say I am a jack and not a master. I love to know a little bit about all sorts of things but end up only having a veneer of understanding about a wide variety of topics. There have been some exceptions. For instance, when I moved from hierarchical to relational databases I had a transition problem so ended up having to dig right down to the internals of the code, and with the kind help of Oracle at the time went on their employees only internals course, and once I'd understood the file structures and what the developers were doing I could understand everything further up the layers! But that was a long time ago. I also studied economics to a reasonable level. After A level I kept on reading book after book and the more I read the more I appreciated if the fresh water and salt water communities could never agree then what hope was there for anyone else. So trying to help the average worker understand economics is no easy task. And, as I was, on four separa