Harvey is working in a software development team, tasked with creating an innovative web application for a client. However, while working, their server crashed, halting the team's progress. On a positive note, a friend of Harvey's at another company offered him useful encouragement that will motivate Harvey to complete one of his core tasks once the server is up again. According to the reading, the $($a$)$ server crash and $($b$)$ encouraging friend represent what types of work life triggers, respectively?