This document discusses difficult learners and possible reasons for their behaviors. It identifies four types of difficult learners: withdrawers, arguers, supertalkers, and monopolizers. For each type, it provides examples of their behaviors and how they can disrupt learning. The document recommends not ignoring disruptive learners and instead taking a break to address concerns with the learner privately. It questions the underlying motives for difficult learner behaviors and provides references on dealing with problem learners.