Only if we do grasp the internal workings of complex machines can we end up with some understanding of what they're likely to do. This is as true of financial instruments as it is ofTim Worstall is a wholesaler of rare earth metals and one of the global experts in the metal scandium. He is also a Fellow at the Adam Smith Inst in London and an writer for a number of media outlets, including The Times (London), Telegraph, The Register and even, very occasionally indeed, for the WSJ. This account is linked wit ...