Not confrontational, but proselytizing.

Is there truly nothing an AI system could do (no matter how outlandish it seems today) that would give you pause?

Yes, just like that. What would it take for you to accept Our Lord into your heart?

The bar is high, but there's probably some combination of events (combined with a high confidence in my own lucidity over an extended period of time) that would convince me.

Same same.

:\