This document discusses using Twitter for teaching and cognitive apprenticeships. It describes how Twitter can be used to represent historical perspectives from multiple points of view through role-playing historical figures. Examples are given of reenacting past events like the Cuban Missile Crisis. The document also discusses how Twitter allows modeling of expert practices and provides a window into professional fields. Some obstacles to Twitter modeling are that not all fields may be open or suitable and it relies on technology, but it could expand to other disciplines over time.