What l would like to know is how robust, on a scale of one to 10, people consider this, using the International Scale of Robustness

Spectrum of Robustness (Least → Most)
1. Soap bubble
- Delicate, fleeting, collapses at the slightest touch.
2. Paper napkin
- Functional but easily torn, dissolved, or crumpled.
3. Smartphone screen
- Useful but vulnerable to drops, scratches, and obsolescence.
4. Clay pot
- Stronger than paper, but brittle under impact.
5. Wooden chair
- Solid, practical, but can wear down or break under stress.
6. Steel wrench
- Durable, reliable, resistant to wear, but can corrode over decades.
7. Oak tree
- Living robustness: flexible in storms, enduring across centuries.
8. Concrete bridge
- Engineered resilience, able to bear immense loads for decades.
9. Internet protocols (TCP/IP)
- Conceptual robustness: still functioning globally after decades, adapting to scale.
10. Earth’s biosphere
- The ultimate robust system: self-regulating, adaptive, and enduring across billions of years.