The World Economic Forum's 2026 report The Human Advantage puts a name to something leaders have long sensed. It calls it brain capital.
Brain capital combines brain health with brain skills. Brain skills include judgement, resilience, adaptability and communication.
Why it matters now
Most knowledge work depends on people thinking well on an ordinary afternoon. Overload, poor sleep and constant interruption quietly reduce that capacity.
The WEF report says AI changes should be paired with deliberate investment in brain skills. Without that, it warns, organisations risk losing their edge.
Two threats from AI
Overload. A 2026 Berkeley study found AI often intensifies work. People took on more, worked faster and worked longer, often unasked.
Deskilling. A 2026 paper in AI & Society argues AI deskilling is a structural problem. When AI does the thinking, people lose chances to build skill.
A 2026 study in Frontiers in Psychology adds nuance. It separated dependent offloading from autonomous offloading. The risk lay in dependent offloading, where people stop doing the thinking themselves.
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Judgement grows through practice
Experienced people know when something is about to go wrong. That feel comes from years of working through hard problems.
If AI supplies answers before people have wrestled with the problem, that feel may never form. The organisation gets faster at known answers and worse at new ones.
What leaders can do
Choose what stays human. Decide which tasks people should keep doing, so judgement keeps growing. That choice is part of Adaptation.
Think first, then ask AI. Encourage people to note their own view before they see the AI's answer.
Protect focus time. Block uninterrupted time for hard thinking. Senior leaders should protect theirs visibly.
Remove work as well as adding it. Every new AI routine should replace an old task.
Try this
Pick one recurring task where judgement matters. Ask newer team members to draft their view before using AI. Compare the two and discuss the gaps.
The Brain Health and Focus Diagnostic and Growth Mindset Evaluator give your team a baseline.