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# Topics {#topics}

**Six questions about the infrastructure Europe depends on.**

Each topic takes a word that is widely used and rarely defined, and sets out what we mean by it: the distinctions we find useful, the mistakes we see repeated, how we work on it with partners, and what we will not claim. Each is a position, not a product description. See [How to read our claims](/our-approach/how-to-read-our-claims).

> ### [Sovereignty](/topics/sovereignty)
>
> _Can you change it when you need to?_ Sovereignty as an operational property of a system, not a label on a supplier.

> ### [Resilience](/topics/resilience)
>
> _What still works when something fails?_ Resilience as a property of an essential function under a named failure condition.

> ### [Early warning](/topics/early-warning)
>
> _Can you see where it is fragile?_ Seeing fragility build up across domains before it surfaces as a failure.

> ### [Verification](/topics/verification)
>
> _Has it worked outside the lab?_ Evidence gathered under the conditions that matter, with its limits stated.

> ### [Capability transfer](/topics/capability-transfer)
>
> _Does the capability stay with you?_ Capability built into the institution during the work, including the ability to judge.

> ### [AI-readiness](/topics/ai-readiness)
>
> _Can machines read it the way you intend?_ Public information that machines do not have to guess about.

The six questions, and the condition that runs beneath all of them, are set out in [Six questions we ask](/our-approach/six-questions-we-ask).

## On this page {#on-this-page}

ESFI — civilization infrastructure · https://esfi.eu