Collective IQ
Engelbart's central concept: the capacity of a group, organization, or society to address complex urgent problems. The thing he kept naming, and the thing the industry kept losing.
Collective IQ
Engelbart’s central concept and his life’s work.
Individual IQ is the capacity of a single person to address complex problems. Collective IQ is the capacity of a group, organization, or society to do the same. Engelbart’s claim: the rate at which complexity and urgency are growing in the world far outstrips what individual human cognition can keep up with. The only viable response is to deliberately grow our collective IQ.
His 1962 framework H-LAM/T already implies this. The unit being augmented is a Human, but the augmentation system (Language, Artifacts, Methodology, Training) only compounds when it is shared. A group co-evolving its tools, language, methods, and training is a group whose collective intelligence keeps rising. He named this deployment context the Networked Improvement Community (NIC).
Why it was lost: the personal-computing industry inherited the half of NLS that was easy to ship (individual productivity, the GUI surface) and dropped the half that mattered most to Engelbart (group co-evolution). The 2004 Accelerating Change keynote “Large-Scale Collective IQ: Facilitating its Evolution” is essentially a fifty-year-later post-mortem and call to return.
For the Guildford talk: LLMs make this question urgent again. Each LLM session is an individual-IQ augmentation. The interesting and unsolved question is what happens when teams, organizations, and communities run those sessions in concert: how do their methodologies, vocabularies, prompt libraries, and review practices co-evolve? That is collective IQ in 2026 terms. The field has barely started to design for it.