In March 1809, a coded message was sent to a French general stranded far from Napoleon's main armies. Its key was lost, and for more than two centuries nobody could read it. Now an engineer with no codebreaking background says he has opened it, using OpenAI's GPT-6 Astra. The Letter Nobody Could Read The message was written at the headquarters of Eugène de Beauharnais, … [Read more...] about Napoleon’s Secret Letter Sat Unread for 217 Years — Then an AI Cracked It in About Six Hours