'Many deaf and hard-of-hearing people have been left bemused by some unfortunate mistakes in the BBC’s computer generated subtitles. The errors asked for ‘a moment of violence’ to commemorate the Queen Mother at her funeral and mistakenly called the Archbishop of Canterbury the ‘Arch b*tch of Canterbury’. Mistakes are so frequent they’ve prompted the creation of a website dedicated to sharing the gaffes. Live subtitles are generated by speech recognition as someone talks into a microphone while listening to a programme, or by a stenographer typing words manually. A news reporter visiting a farm spoke of the pigs’ habit of...