(most AIs need to be explicitly told before you start this). You tell them not to agree with you, to ask more questions instead of providing the answers, to offer justifications and background as to why those questions are being asked. This helps you refine your ideas more, understand the blind spots, and explore different perspectives. Yes, an LLM can refine the idea for you, especially if something like that is already explored. It can also be the brainstorming accessory who helps you to think harder. Come up with new ideas. The key is to be intentional about which way you want it. I once made Claude roleplay as a busy exec who would not be interested in my offering until i refined it 7 times (and it kept offering reasons as to why an AI exec would or would not read it).