Write well, communicate clearly, and take every opportunity offered to present your work. The second half of Professor Hollan's talk focused on computationally-based representations. His current research investigates kinds of representations that can be developed in a computational medium and focuses on alternative metaphors for computing and ways of making those representations clear. Zooming in reveals a more detailed view, while zooming out reveals a general view but maintains accessibility to the details. Next, he presented PadPrints, an application for graphically preserving one's history of Web browsing.
Representation is a central issue in cognitive science.
Research into new ways of representing information in the computer medium will be of tremendous benefit for improving user interfaces for all kinds of applications and will improve our understanding of the cognitive demands new representations place on the human operator.