Definition
Delegating a mental task to an external tool. The oldest and broadest term in this glossary, predating AI by decades. It is a cost-benefit calculation rather than a reflex: people offload when the expected cost of doing it internally exceeds the expected cost of reaching for the tool.
What is at stake
Two consequences follow. The behaviour is rational rather than lazy, so telling people to offload less does not work. And the calculation runs on estimates, which is exactly what the efficiency-gain illusion finds is systematically wrong for AI and accurate for everything else.
Where the word came from
- The extended mindClark and Chalmers, 1998, arguing the coupled system is the right unit
- The review that gave the term currencyRisko and Gilbert, 2016, with the cost-benefit account
- The common ancestor of the research herecited by Fan, Yu and Jose
How episcope came to it
Risko and Gilbert, 2016. Verified against the paper on 21 August 2026.
What to watch for
Kahneman and Tversky are often named as the parent here, and they are not. Their 1979 prospect theory is about choice under risk. That line runs to the efficiency-gain illusion. Cognitive offloading runs from the extended mind instead. Two lineages, easily merged and better kept apart.
Papers behind it
Risko, E. F., & Gilbert, S. J. (2016). Cognitive Offloading. Trends in Cognitive Sciences, 20(9), 676-688.
Clark, A., & Chalmers, D. (1998). The Extended Mind. Analysis, 58(1), 7-19.
Fan, Y., Tang, L., Le, H., Shen, K., Tan, S., Zhao, Y., Shen, Y., Li, X., & Gašević, D. (2025). Beware of metacognitive laziness: Effects of generative artificial intelligence on learning motivation, processes, and performance. British Journal of Educational Technology, 56(2).
Yu, S., Jurafsky, D., Hawkins, R. D., et al. (2026). The efficiency-gain illusion: People underestimate the rate of AI use and overestimate its benefits on simple tasks. arXiv:2605.22687.