The conversation between human and AI assistant.
How can you be 1000% sure of real celebrities replying to you on Facebook?
Interesting. Are there any other ways to be sure?
Another way is to pay attention to the response time and the content of their responses. Real celebrities may take time to respond or may not respond at all, depending on their schedules. But if they do respond, their message should be coherent, personalized, and relevant to the conversation. If the message seems generic or seems like a copy-paste response, it's likely not from the real celebrity.