This document discusses the concept of trust. It argues that trust is essential to understanding life and human affairs as it allows people to take action despite uncertainty. Trust acts as a bridge across uncertainty. The document explores what builds trust between individuals, including honesty, judgement, likability, and physical attractiveness. However, it notes that trustworthiness is more important than honesty alone. Deception also plays an important role by violating trust. Overall, the ability to assess who and what can be trusted is critical for decision making and survival.