 The first category concerns the witnesses to the event. Obviously the credibility of an event increases when more witnesses attest to it. We also need to know about the character and competence of the witness(es). If they are educated, sensible and critical we will more readily believe them than if they are ignorant and gullible. A second category of consideration that Hume mentions is that there is a general psychological weakness in human nature whereby we want to believe in events that produce feelings of surprise and wonder because these are “agreeable emotions” (EU, 11.16/117).