THOUGHTSTICKER 1986: A personal history of conversation theory in software, and its progenitor, Gordon Pask

In this paper, the author revisits his excitement in learning Pask’s conversation theory that gave immediate prescriptions for the construction of training systems and adaptive, personalized information browsers. Named after Pask’s first implementation of an interactive knowledge structuring tool, the THOUGHTSTICKER system described here came to maturity in 1986, some ten years before the Web’s wide acceptance, yet it had all the components of modern Web browsers plus an organising principle for the hyperlinks – something the Web still needs. THOUGHTSTICKER’s techniques for modelling each user’s unique experiences and conceptual learning style embodied the concept of “personal computer” still unattained in other commercial software products. Over a 15‐year period, many software prototypes were constructed and gave proof to the applicability of Pask’s theory. It remains to be seen if these and other aspects of his theory will rise to the consciousness of the marketplace, becoming popular and, afterwards, irremovable and “obvious”.