CONCEPT
Representational Mismatch
Tversky's diagnostic term for the gap between the spatial structure of a thinker's understanding and the spatial structure a tool demands — the hidden tax on every pre-AI interface.
Representational mismatch names the cognitive friction that arises when an external tool imposes a spatial organization incompatible with the user's mental model of the problem. Tversky's framework treats this not as a minor usability issue but as the central cost structure of human-computer interaction for fifty years. The builder thinking in temporal flows must translate into alphabetical maps; the analyst thinking in networks must compress into hierarchies; the designer thinking spatially must encode in sequential code. Each translation consumes cognitive resources, introduces noise, and erodes the signal between intention and artifact. The natural language interface marks the first time a tool accepts whatever spatial representation the user brings, collapsing the translation tax to near zero.
In The You On AI Field Guide
For most of computing history, the user adapted to the machine. The command line required the user to reorganize thought into sequential text strings. The GUI imposed windows and icons, closer to spatial intuition but still constraining. The touchscreen moved toward direct