Lying is considered wrong because it harms trust, corrupts the liar, and prevents others from making rational decisions. 

Is Your AI Lying To You?

There are several different types of prompting methods, but I have found the PICKLE method is one of the more effective and easy-to-remember approaches:

https://www.forbes.com/councils/forbesbusinesscouncil/2025/05/01/is-your-ai-lying-to-you-how-to-avoid-hallucinations/