If you meet a NPC you can recognize it by looking into his eyes and ask one question:
"Have you ever seen a ghost?""
The NPC will answer that it has an aunt or an uncle that has seen a ghost once.
Or it will say: "I don't believe in this."
After this the NPC will change the subject asap.
NPCs are not programmed like us. They can read your mind and thoughts, they know what
you want and desire. However, they are not programmed that complex to answer such questions
accurate. But... NPCs can learn and copy your knowledge.
When they copy your statements you will recover that you can discuss with it,
But... they won't develope this knowledge. You will notice that they just repeat.
Remember: 9 of 10 people are NPCs. They are everywhere.
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