Helpful notices (contd.)

Boyd Harris sent me this lovely one, seen in a pub in Cumbria. As he observes, scares about new inventions have a venerable pedigree. I once had a conversation with the man who had been the chief architect for the old London County Council and he told me that some councillors had opposed the building of high-rise apartment blocks on the grounds that people who lived on the top stories would be short of oxygen!