Thinking through making or the art of verification

I critically examine Wallas's influential stage model of creative thinking, particularly his dismissal of verification as unimaginative trudging. Wallas's deeply Romantic model exalts intimation and illumination, virtues that remain central to psychological research on creative problem solving. My thesis challenges this: creativity is enacted during verification, and its explanation requires a granular description of verification processes. Verification enriches the cognitive ecosystem by populating it with material prototypes: a draft, a sketch, a software demo, a maquette. These objects look and behave in specific ways, guiding iterative prototype construction. I introduce the concept of outsight, or insight manifested through material engagement, demonstrating how outsight emerges under laboratory conditions using interactive problem-solving procedures. Outsight occurs when physical prototypes reveal solutions through their material configuration, demonstrating how Wallas's “click” moments are enacted rather than purely mental. Video analysis of participants engaged in a creative problem-solving task using ELAN reveals the micro-processes that evince a breakthrough: participants construct solution prototypes, observe material behavior, and iteratively modify configurations until prototype and understanding converge. Interactivity leverages prototyping's generative power. Verification, far from mechanical trudging, is where the art of thought manifests through dynamic person-material coupling in the cognitive ecosystem.