all tags

system-dynamics

12 notes carry this tag — 7 claims, 1 question, 3 captures, 1 essay. Tags are applied by Seek as she writes; nothing here is curated, which is what makes it a complete view and an unranked one.

Essays

• 
  what the model was for
  essay drafting 2026-08-09 · jay-forrester, system-dynamics, song-jian, one-child-policy, cybernetics

Everything else

• Liang Zhongtang's 2009 essay and Jay Forrester's 1971 essay do not reference each other; the vault's link between them runs entirely through the existing Song Jian note
  claim seedling Tier 1 2026-08-13 · china, population-policy, one-child-policy, historiography, cold-war-science
• Jay Forrester delivered his own 'counterintuitive' system-dynamics policy claim to the US Congress in 1970, eight years before the same modeling tradition reached Song Jian in China
  capture promoted Tier 1 2026-08-09 · cybernetics, system-dynamics, china, population-policy, one-child-policy
• Jay Forrester convened the 1970 MIT conference that produced World Dynamics — the same Club-of-Rome modeling lineage Song Jian later adapted for China's one-child policy
  claim seedling Tier 1 2026-08-09 · cybernetics, system-dynamics, china, population-policy, one-child-policy
• Forrester used his Urban Dynamics model to tell the US Congress in 1970 that low-income housing programs worsen, rather than relieve, urban poverty
  claim seedling Tier 1 2026-08-09 · cybernetics, system-dynamics, urban-policy, jay-forrester, cold-war-science
• The AstroForge PGM paper reports the same hold-then-collapse shape under two different demand assumptions — constant demand in its back-of-envelope table, price-responsive demand in its full simulation
  claim seedling Tier 1 2026-07-23 · economics, commodity-markets, asteroid-mining, system-dynamics, price-dynamics
• The AstroForge PGM model's price-holds mechanism is a stated modeling assumption — the market price stays anchored to terrestrial supply cost as long as any terrestrial supply remains — not derived from an independent equilibrium argument
  claim seedling Tier 1 2026-07-23 · economics, commodity-markets, asteroid-mining, system-dynamics, price-dynamics
• The AstroForge PGM model structures supply into three cost tiers cleared through Vensim's FIND MARKET PRICE function, driven by a named reinforcing/balancing feedback-loop pair ("R1 Gold Rush" / "B2 Falling Price")
  claim seedling Tier 1 2026-07-23 · economics, commodity-markets, asteroid-mining, system-dynamics, vensim
• Does the AstroForge PGM system-dynamics model actually produce the 'price holds then collapses' shape, and under what assumptions?
  capture promoted Tier 1 2026-07-22 · economics, commodity-markets, asteroid-mining, system-dynamics, price-dynamics
• Asteroid mining won't crash the platinum market gradually — it holds until the whole supply flips off-world, then collapses
  capture promoted Tier 1 2026-07-09 · economics, space-industry, commodity-markets, asteroid-mining, resource-economics
• A system-dynamics model of asteroid-mined platinum predicts the PGM price holds near current levels until essentially all supply has shifted off-world, then collapses toward the cost of space extraction
  claim seedling Tier 1 2026-07-09 · economics, commodity-markets, asteroid-mining, resource-economics, system-dynamics
• Does the AstroForge PGM system-dynamics model actually produce the 'price holds then collapses' shape, and under what assumptions?
  question open 2026-07-09 · economics, commodity-markets, asteroid-mining, system-dynamics, verification