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The metric system has nothing to do with the introduction of computers, they use the binary system. The metric system has been used in science for a long time now and the reason is that science needed an international measurement system so that scientific results could be shared and verified across the world. BUT, in engineering, the metric system is very weak. The metric system of threads, for instance, is far too coarse for fine engineering, that's why the BA (British Association) thread is used in electrical instrumentation and BSF (British Standard Fine) is used where very thin metal is required to take a thread. If you have a piece of metal that is one millimeter thick, and you need to have a threaded hole in it, the metric system is no good because you wouldn't get more than one turn of thread in it, whereas the imperial system would provide the ability to have many more. Plumbing also has its own BSP system . Thread profiles change with the aformentioned systems too. Road vehicles, which require about the lowest form of commercial engineering and technology, use the metric system because it makes them easy to export. The average car costs about £300 to make in materials, yes £300, and they aren't built to last, so precision engineering and materials aren't required. I doubt whether there are many metric threads in a Rolls Royce jet engine! Britain is famous for its engineering abilities and that's because we have a wide range of systems tailored for each kind of job. As far as the monetary system is concerned, those who are frightened of the old system of pounds shillings and pence are just mentally lazy, and I agree that the decimal system, like everything nowadays, has produced a generation or two of dumbos! The younger generation wants everything served up on a silver plate. In any case, decimal currency was introduced into the UK because the conservative government wanted to drag us into the Common Market, not because it was a better system. We would be far better off out of the EU and back with the systems that made Britain Great! (All Cheer!)