Ever had that stomach-sinking moment when you realise you've made a massive, irreversible mistake? Try 50,000 glossy brochures printed with the wrong phone number. One poor marketer handed over a random pensioner’s number to the public, then had to hire temps to stick the correct digits on every single copy by hand. It only got worse from there. Mail merge cock-ups that sent rival names to customers and a sixty grand exhibition display with a typo you couldn’t cover up with gaffer tape. Bruta...