Thought as a Technology (2016)

The piece argues that certain computer interfaces function as cognitive technologies: external artifacts whose objects and operations can be internalized and then used as elements of thought. It opens with a vivid MacPaint anecdote - mouse-based drawing, FatBits magnification, and undo - that transformed the author’s visual thinking by making new manipulations easy and intuitive. Drawing parallels with language, cubist painting, high-speed photography, and the Beck Underground map, it shows how inventions create novel representational primitives people can learn to think with; once internalized, these primitives enable new insights and creative capacities that were previously difficult or impossible.

To guide invention of such primitives, the work proposes heuristics and demonstrates a rough prototype for exploring one-dimensional motion aimed at introductory physics students. The central heuristic presented is to reify hidden representations - making the tacit mental imagery experts use explicit in an interface. Citing Thurston’s descriptions of mathematicians’ internal visualizations and Sussman’s account of engineers’ informal reasoning, it contends that surfacing those hidden models in tools amplifies understanding and discovery. The overarching claim is that thoughtful interface design can expand the “carrying capacity” for ideas, enabling new modes of thought and potentially new forms of discovery.