Product design question
How would you go about building a library for the next 1000 years, considering technological advancements, preservation methods, and evolving needs of future generations?
- Product design
- Medium
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What this question tests
Long horizon product thinking: can you reason about durability, format obsolescence, and access under deep uncertainty rather than describing a normal library.
How to approach it
- Reframe the real goal: preserving human knowledge and making it accessible, since a physical library alone will not survive format and technology changes over centuries.
- Identify the core risks: physical media decay, format obsolescence like readers for old digital media, and loss of institutional maintenance over time.
- Propose a strategy: redundant storage across multiple physical formats and locations, paired with active migration to current digital formats on a recurring schedule rather than one time digitization.
- Address access, ensuring content remains understandable, for example maintaining translations or format readers as languages and technology evolve.
- Address governance, since a thousand year project needs an institution or protocol designed to outlast any single organization.
- Define success as percentage of content successfully migrated and remaining accessible at each future audit point, for example every 25 years.
What a strong answer includes
- Treats format obsolescence and active migration as the central design problem, not just physical shelf space.
- Addresses institutional continuity, recognizing no single company survives a thousand years, which shows genuinely long horizon thinking.
- Proposes a concrete cadence, periodic migration audits, rather than a vague set it and forget it plan.
Common mistakes
- Designing a normal modern library and ignoring the extreme time horizon in the question.
- Assuming digital storage alone solves preservation, ignoring format and technology obsolescence.
Likely follow-up questions
- How would you decide what content is worth preserving at this scale?
- What is the biggest single point of failure in your design?
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Learn the skill behind it
Chapters of the AI PM course that teach what this question tests.
- Chapter 4: Discovery and strategy for AI products
- Chapter 7: AI UX and human oversight: design for a system that is wrong sometimes
- Chapter 14: Get the job: the AI PM interview loop