Pareiduo: A Human–LLM Dialogue in Sand

We introduce Pareiduo, an interactive device that facilitates drawing games between humans and AI. Drawings are a fundamental human artifact and a new way for AI to understand abstract representations. Pareiduo encourages players to sketch in sand on a glowing surface with feedback and instructions driven by LLMs. Two players take on complementary roles: Shadow (handling sand formations) and Light (dealing with voids), working together to help the AI identify their creations. The system combines visual intelligence, image processing, and embedded electronics to offer a screen-free, multisensory interface that promotes face-to-face interaction. Pareiduo reimagines human-AI perceptual differences not as mistakes but as reflections of the variety within abstract representation. The project explores the creative space where human imagination and machine perception meet in an open-ended conversation, sparking reflections on representation, standardization, and teamwork in the digital age. Requests for name changes in the electronic proceedings will be accepted with no questions asked. However name changes may cause bibliographic tracking issues. Authors are asked to consider this carefully and discuss it with their co-authors prior to requesting a name change in the electronic proceedings. Use the "Report an Issue" link to request a name change. Do not remove: This comment is monitored to verify that the site is working properly