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1 min read •Published Nov 2026 •Updated Nov 2026

What is the half-life of skills and why does it matter?

Quick answer: The half-life of a skill is how long it takes for that skill to lose half its value as a field evolves, and it keeps shrinking, especially for technical skills. It matters because skills learned once no longer last a career; what is current today can be outdated in a few years. T…

The half-life of a skill is how long it takes for that skill to lose half its value as a field evolves, and it keeps shrinking, especially for technical skills.

It matters because skills learned once no longer last a career; what is current today can be outdated in a few years. That is the core case for continuous skilling and reskilling: organizations have to keep refreshing capabilities constantly, not train once and assume it holds.

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