This research introduces the Softness Paradigm as a novel approach to human-computer interaction, proposing that integrating soft, adaptive materials—coupled with speculative design—can meaningfully bridge the gap between digital systems and human emotional needs. In contrast to dominant paradigms prioritizing efficiency, speed, and rigidity, this work explores how tactile, affective interaction might foster deeper engagement, comfort, and well-being. We investigate how interaction can shift toward more sensory-rich and emotionally resonant experiences through bottom-up material experimentation with textiles and temperature-responsive elements and an iterative prototyping process grounded in speculative methodologies.
Focusing on the speculative redesign of the ubiquitous computer mouse, this project serves as a case study to explore the transformative potential of softness in everyday technological interaction. Early material experiments and engagement with existing soft interface designs revealed that material fragility can enhance attentiveness, soft textures may slow interaction and promote mindfulness, and haptic intelligence offers a compelling alternative to strictly efficiency-based design logic.
These insights were further deepened through public exhibition of our prototypes, where participants engaged with soft interfaces in an open, domestic-style setting. Observational data and informal interviews revealed both curiosity and confusion—highlighting a gap between expected interface behaviors and the more ambiguous, emotionally driven interactions our designs invited. These interactions provided critical qualitative feedback on the experiential impact of softness, and underscored the need for clearer sensory cues in alternative interface design.
This research envisions a future in which technology transcends mechanical precision to embrace the richness of human touch, adaptability, and emotional resonance. The project contributes to a growing body of design knowledge advocating for more human-centered, relational approaches to digital technology.

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