This document discusses self-fulfilling prophecy through an example of people using mobile phones. It notes that mobile phones have become essential tools that provide entertainment through apps, games, and social media. However, addiction to mobile phones can lead to antisocial behavior. The author provides an example of observing men sitting together on their phones and making a prediction that they could either have antisocial tendencies or simply be communicating with others, demonstrating how assumptions can become self-fulfilling prophecies.