The document outlines 4 steps to determining trustworthiness:
1. Observe how quickly someone speaks - fast talkers may lack confidence or belief in what they're saying.
2. Notice if they interrupt others - interrupting is rude and signals a lack of interest in others.
3. Consider their body language - trusting people make eye contact, smile, and appear engaged rather than distracted.
4. Assess their grasp of facts - trusting sources are honest about evidence rather than selective or opinionated. Checking these factors can help evaluate trustworthiness in sales and politics.