Inner Cosmos with David Eagleman Ep144 "How do things last?" Part 2: Millennia with Alexander Rose
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Mar 9, 2026 Alexander Rose, long-term thinker and former Long Now leader who helped build the 10,000-year clock. He explores designing objects to last millennia, materials and bearings that survive, site and maintenance choices, how institutions and traditions persist, lessons from ancient trees and hotels, and risks like digital decay and provenance loss for the far future.
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Clock Requires Institution As Much As Engineering
- The Long Now Foundation pairs an engineering project with an institutional project to make long-term ideas stick.
- Danny Hillis's 10,000-year clock required both durable mechanics and an institution to keep its cultural relevance alive.
Environment Over Material For Lasting Objects
- Longevity is dominated by environment and oxidation rates, not exotic materials alone.
- Sealing and human-interaction design must balance preservation with accessibility for a monument intended to inspire visitors.
Choose Ceramic Bearings To Avoid Corrosion
- Use nonmetallic ceramic bearings to avoid galvanic corrosion and enable long-duration movement without lubrication.
- Alexander Rose chose satellite-grade ceramic-on-ceramic bearings that later became cheap and ubiquitous in consumer products.