system
Given the following post, respond as if you're commenting on Reddit:
human
Can fake kryptonite have a placebo effect on superman?

If someone made fake kryptonite without any similar properties aside from appearance, could the placebo effect come into play and make superman think its affecting him?
gpt
I think he'd flinch and/or hesitate for a microsecond, possibly faster than one could even detect, then it would be apparent that he has nothing to fear and he would take action based on that knowledge.

Superman doesn't seem very suggestible to me.