What is illustration? A shadowy definition for illustration research

The field of artistic research in illustration requires an updated definition of illustration to accompany recent exploratory research methods, concepts and media. A consideration of the etymology of 'illustration' and 'illumination' leads to the pre-Latin root, leuk ('light'), and the problematic conflation of illustrating with enlightenment. Referring to Derrida's Socratic theory of illustration and critique of mimicry, I argue for expanding illustration definitions to include 'shadows' - illustration's propensity to mislead or falsify. I adopt the ancient word ghel ('glow') to recuperate the illusory aspect of illustrating as a more embodied, alternative conceptualization of shining light and casting shadow, one that puts visual and affectual meanings before verbal. Then I provide examples of how in practice ghel, iconoclasm and aniconism illustrate 'non-representable' events and experiences. I conclude with a definition of illustration for Delivered by Intellect to: illustration research.