Actually, i did mean to write human. Don't remember where I read it, but one of the LLM developers said that the best prompt engineers are the ones that can communicate very effectively with humans. If you know how to clearly talk to a fellow researcher, with attention to detail, in a structured manner, you'll be very good at talking to that machine too. The other way around, learning how to make good prompts to talk to an LLM will make you better at communicating with people.