Cognitive Load

The mental burden work imposes on humans — a design target for platforms and AI systems alike, since extraneous load cancels out AI's quality contributions.

Also known as: cognitive load, Cognitive load, Cognitive Load (intrinsic / extraneous), extraneous cognitive load, AI brain fry, Precision Proactivity, task switching (LLM behavior)

Mental Load (Work-Life Collision)

How authors use it

Oldest first (extraction date when no publication date is known).

AuthorTheir termTheir meaning
Team Topologies: Organizing Business and Technology Teams for Fast Flow
Matthew Skelton & Manuel Pais · 2019-09-16
Cognitive load (intrinsic / extraneous / germane)Borrowed from educational psychology (via Jo Pearce): intrinsic load is the inherent difficulty of the task/domain itself; extraneous load is load imposed by how work is presented or tooled (e.g., clunky environment setup) and should be minimized; germane load is the load that matters for learning/performance on the task's substance and should be protected. Team Topologies uses this triad to decide how much software a team can reasonably own.
Precision Proactivity: Measuring Cognitive Load in Real-World AI-Assisted Work
Brandon Lepine; Juho Kim; Pamela Mishkin; Matthew Beane · 2026-03-10
Precision ProactivityAuthors' own framing: 'systems that can detect entrenched high-load trajectories, constrain scope expansion, and actively reimpose structure to dampen rather than perpetuate cognitive burden'. Three operational principles: (1) detect/respond to elevated cognitive load (treat high-load prompts as signals for structural support, not opportunities for maximal elaboration); (2) constrain system-initiated scope expansion via subtask focus stack + explicit scope elicitation; (3) enable structured disclosure via user-directed navigation. The 'precision' is about WHEN to intervene and WHAT scope to maintain — not about model output accuracy.
Precision Proactivity: Measuring Cognitive Load in Real-World AI-Assisted Work
Brandon Lepine; Juho Kim; Pamela Mishkin; Matthew Beane · 2026-03-10
Cognitive Load (intrinsic / extraneous)Adopted from Sweller's classical Cognitive Load Theory. ICL: complexity inherent to task itself, arising from element interactivity. ECL: arises from presentation of information — avoidable working-memory burden imposed by information poorly structured, mistimed, redundant, or misaligned with goals. CRITICAL terminological note: the authors operationalize these as computational estimates derived from conversational transcripts, NOT physiological or self-reported states — 'they should be understood as theory-grounded proxies — not direct measurements of neural or subjective load'.
Precision Proactivity: Measuring Cognitive Load in Real-World AI-Assisted Work
Brandon Lepine; Juho Kim; Pamela Mishkin; Matthew Beane · 2026-03-10
Task switching (LLM behavior)Partial interruptions in which attention is redirected to a different subtask without fully abandoning the original goal — specifically when the system proactively introduces subtasks the user did not request, or when conversational focus oscillates across subtasks. The single most damaging behavioral feature (β=−0.271, p<0.01 in joint models). The paper's signature operational finding: it's not depth that hurts, it's unsolicited scope expansion.
Research: Why You Shouldn't Treat AI Agents Like Employees
Lisa Krayer · 2026-05-06
AI brain fryMental fatigue from excessive oversight of AI beyond one's cognitive capacity, leading to more frequent errors
How Platform Engineering Using Golden Bricks Can Enable Fast and Smooth Delivery
Ben Linders · 2026-05-21
Cognitive loadThe amount of stuff a developer must hold in their head to get code shipped; the thing platforms exist to reduce.
Presentation: Platform Engineering for Everyone - Success Can’t Be Coded
Max Körbächer · 2026-07-20
Cognitive load (meeting/context-switch framing)The disruptive residue of interruptions and context switches: a ~5-minute disruption can occupy the brain for up to an hour, and mood/topic carries over between unrelated back-to-back meetings.
Do you even need a presentation?
Sumeet Gayathri Moghe (byline metadata reads Martin Fowler; published as first article of a guest series on martinfowler.com, editorially reviewed by Fowler) · 2026-09-12
cognitive load (audience-managed)The mental burden placed on a reader/viewer when they, rather than the interactive medium, must do the work of organizing and pacing through information (e.g. scanning a dense document or spreadsheet unaided); interactive web apps are framed as a way to shift that burden from audience to artefact via chunking and guided exploration.

Documents (23)

Propositions touching this concept (25)

By publication month, oldest first (extraction month when no publication date is known).

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Tensions

Is the value question genuinely settled by evidence, or does uncertainty and sampling bias still dominate?
from: What did the participants of the Thoughtworks 'Future of Software Engineering' Europe retreat (mid-2026) conclude about how agentic AI is reshaping software engineering?
Assessment: The single sharpest divergence, and it sits directly under the headline whether-to-how convergence: they narrate the same shift but disagree on what it establishes. Edwards-Alexander and Herlein read the room's confidence as evidence; Vella and Ruby read the same room as a self-selected in-group. Ruby has the better of it methodologically — he is the only one to interrogate the sample and to notice the evidence is asymmetric (upside anecdotal, downside studied), which is uncomfortable precisely because the cohort's confidence is built on the weaker side.
If code is no longer the bottleneck, what is the new binding constraint?
from: What did the participants of the Thoughtworks 'Future of Software Engineering' Europe retreat (mid-2026) conclude about how agentic AI is reshaping software engineering?
Assessment: They agree code/delivery has ceased to be the constraint but name three different successors, with different investment implications — expand decision-making capacity (Vella), optimise for learning (Edwards-Alexander), or capture tacit knowledge (Herlein). These are complementary in principle but rivalrous for attention and budget; the disagreement matters because each implies a different 'first thing to fix.'
Does AI adoption improve output and developer experience together, or do they decouple — with more output bought at the cost of the developers?
from: What is the future of software development in the agentic/AI age?
Assessment: This is the specific, evidence-bearing form of the optimism/pessimism split, and it cuts directly against any simple reading of 'DevEx = AgentEx' as good news. The harmony camp (Nilsson, Ördög) speaks from felt experience and in-group mood; the decoupling camp (Thoughtworks, Vella) and Fowler's own cited HBR study bring the harder data, and it shows output and wellbeing pulling apart. Notably Fowler holds both 'same-size teams do much more' and the burnout finding without resolving them — the single clearest internal contradiction in the corpus, and a sign the harmony framing is doing more reassuring than the evidence supports.
If code was never the bottleneck, what is the binding constraint now?
from: What is the future of software development in the agentic/AI age?
Assessment: A productive three-way split downstream of the shared 'code was never the bottleneck' finding. They are not incompatible so much as differently located — decision capacity (Vella) is organisational, learning (Edwards-Alexander) is about the team's rate of understanding the problem, and knowledge (Herlein) is about capturing rationale. But they imply different investments: expand downstream absorption, restructure around learning, or build knowledge-capture pipelines. The corpus has not reconciled which is the true binding constraint, and each author generalizes from a different vantage (a retreat-floor convergence, an org-design frame, a knowledge-engineering frame).

Open gaps (56)