Before you start responding to the weekend’s emails, you may want to consult IBM’s Watson. The artificially intelligent computer is now equipped to analyze the tone and sentiment of text. More specifically, it can determine if a passage is cheerful, negative or angry, open, agreeable or conscientious, and it will even describe how analytical, confident or tentative it is. After figuring out what you’re trying to convey, Watson will then provide alternative words and phrases to fine-tune the text. No more passive-aggressive emails.