How we improved Typerighter, the Guardian’s style guide checker, to provide more value for the Guardian and its readers.Minimising typos is important to a newspaper. Publishing messy prose might undermine trust in our overall quality control – why trust our political reporting if we can’t spell Thérèse Coffey’s name? We want to provide accurate information, and typos can mutate meaning – a single letter can transform a fiend to a friend and a bowl to a bowel. Worse, a missing word can turn a hol...