"What's the motivation of this paper? We've seen in most of these locations that there was an #emergence of some form of hierarchical #government [correlated with] a monopoly of #violence and increased #inequality [and] most people lost."
Citing work led by SFI's Tim Kohler in 2017 showing the increase in #inequality (as measured by #GINIcoefficient) as society evolves greater political #scale and more complex/abstract means of production:
"I can never be robbed for more than I have after wages spent. This implies it is much more attractive to rob the chief [and that therefore] you need a large defense force for the chief."
"You have marginal returns on investing in arms both for attack & for defense. This makes things a little complicated."
"The 2 best strategies are [not subgame perfect, i.e.] 'we both invest in grain [& not] in arms (given no robbery) [but then attacking yields greater payoff].'"
"In a single-tribe #society, being larger is good. But at some point, monitoring starts to dominate. What at the end what kills a single tribe is that monitoring costs get out of hand."
In the "Warring Tribe" strategy, "People are not forced to invest in arms, but they voluntarily do; we have no monitoring here, so we need coordination. We have a common enemy. But the larger the tribe size, the lower our individual investment in arms, making robbery attractive."
"There's a huge #efficiency gain in monitoring. The chief's power is #information. Soldiers know they can now only effectively use their arms by listening to the chief."
"The key question around the #GreenEnergy transition is technological progress, and which technologies would improve..."
- SFI Prof J. Doyne Farmer (@INETOxford)
Follow this 🧵 for insights from today's seminar, streaming now on our YouTube channel:
"We're tracking the evolution of the global #energy landscape over about 140 years: which source is providing our energy, and how much is it providing us with?"
- SFI Prof J. Doyne Farmer (@INETOxford)
"#FossilFuels cost about the same now as they did a century ago. #Renewables have been dropping in price at rates of about 10% a year and deployment has been shooting up at about 30% a year, and this has been continuing for several decades."
"A man who was so restless he said he was chased by 10,000 pigs... He spent his entire inheritance on a five-year voyage of South America. They called him 'The Shakespeare of the Sciences.'"
- @andrea_wulf
🧵@UpshotNYT on new research in @Nature, co-authored by SFI External Professor @JacksonmMatt, on what @facebook data reveals about class, friendship, and economic mobility:
• The premodern era is defined by caloric restriction.
• The modern era is characterized by a small number of sellers of #information vs. a large number of consumers (see also #HerbertSimon's remarks on the "poverty of #attention")