Interview
#29 - Dr Anders Sandberg on 3 new resolutions for the Fermi paradox & how to colonise the universe
- Cross-fertilization is expected among ten concurrent projects via constructive procrastination, which is acknowledged as potentially less effective than alternative methods.
- A dynamic optimist is predicted to actively solve problems before a future singularity, contrasting with complacent optimists who wait for outcomes and pessimists who remain unhappy despite frequent correctness.
- Entrepreneurs in Sweden and Australia are projected to seek opportunities outside their home countries due to perceived limitations in scale, isolation, and career ambition.
- The Great Filter is likely an early event in the emergence of life or intelligence, shifting probability estimates significantly based on current observations of non-emergence.
- Probability estimates for humanity being alone range from 8% in the visible universe to 20–30% in the Milky Way, derived from resampling optimist papers, with uncertainty spanning roughly 100 orders of magnitude regarding life's emergence on Earth-like planets.
- Civilization lifespans are projected to exceed a few decades but remain under 10 billion years, with the absence of nearby aliens causing only a slight shift toward pessimism regarding these limits.
- Reliability of complex analyses is expected to be fragile, as even independent fallible arguments with low error rates offer greater certainty than single elegant arguments, with most actual risk often stemming from the scenario where the analysis itself is flawed.
- Systemic risks in the reinsurance industry and low-probability extinction events like pandemics are highlighted, where errors in judgment can lead to either underestimation or incorrect upper limits on risk.
- Technology completion is predicted to occur regardless of bans, illustrated by historical failures to ban printing versus the success of China in limiting naval power, suggesting beneficial technologies like safer nuclear methods or geoengineering should be accelerated.
- Reliability estimates for critical infrastructure like nuclear plants are expected to degrade over time due to engineer complacency, increasing tail event risks.
- The estivation hypothesis, where civilizations wait for the universe to cool to approximately $10^{-29}$ Kelvin to maximize computation, is assigned a probability of about 10% and is linked to long discount rates in mature civilizations.
- The berserker hypothesis is assigned a probability of 1% or less due to the lack of observed stable warfare equilibria, while advanced civilizations are expected to employ self-replicating support swarms for defense.
- Advanced civilizations could theoretically dismantle Mercury to launch probes to all reachable galaxies in decades, utilizing asteroid regolith mining and exploiting intergalactic dust density to facilitate expansion more easily than within a single galaxy.
- Expansion strategies suggest that reaching 90% light speed accesses most of the reachable universe, with cosmic expansion serving as a braking mechanism to allow probes to arrive with zero velocity.
- The optimal colonization strategy involves sending a few probes to reachable galaxies to build Dyson shells and launch 300 billion probes to solar systems, requiring only two generations and resources equivalent to a Mercury-sized planet, though this dispersion will eventually prevent causal contact and central coordination.
- Ground rules and processes for moral considerations regarding descendants are needed within the next few years to decades.