Where is the real supervision of AI though? Even those that are developing and managing it make it clear that they really have no insights into how or what the

Where is the real supervision of AI though? Even those that are developing and managing it make it clear that they really have no insights into how or what the AI has learned. If we can't peak behind the curtain to see what's really going on, how can we really supervise it? Ever since GPT 3.5 dropped and people really started talking again about whether these AI are sentient, I've wondered if researchers are leaving on quantum theory to write it off as "it can't be sentient until we look to see if it is sentient"