Credit: Unsplash/CC0 Public Domain Cut the words "please" and "thank you" from your next ChatGPT query and, if you believe some of the talk online, you might think you are helping save the planet. The idea sounds plausible because AI systems process text incrementally: longer prompts require slightly more computation and therefore use more energy. OpenAI's chief executive, Sam Altman, has acknowledged it all adds to operating costs at the scale of billions