Facts, Fictions and Forecasts
"What intrigues us as a problem, and what will satisfy us as a solution, will depend upon the line we draw between what is already clear and what needs to be clarified," Nelson Goodman.
State Space Models
Tuesday, September 30, 2025
A More Detailed Look at the Economy of Portugal
Notes
World-System (1960-2100) Venezuela Growth Forecast
Notes
World System (1940-2040) Inflation in Venezuela
Monday, September 29, 2025
Thursday, September 25, 2025
World-System (1970-2100) Latin American Futures
- BAU The Business as Usual model (which you can run here) is cyclical but has the best growth out to 2100.
- TECHE The Technical Efficiency model is stable and a strong contender (AIC = -160.3, smaller is better).
- TECHP The Technical Productivity Model is also stable and has one of the best statistics (AIC = -264.3). This model is the Systems Theory analog of the Neoclassical Economic Growth Model with erogenous technological change.
- US The model drive by the US is also stable, cyclical and an obvious contender given the history of Latin America (AIC = -85.96).
- RW In the short run, the Random Walk is a strong contender (AIC = -108.1)
- W The World System input model is stable, cyclical and also a strong contender (AIC = -71.53). Unfortunately, it leads to collapse starting in the very near future.
Notes
Friday, September 19, 2025
World-System (1980-2100) Six Forecasts for the United Kingdom
The US and the United Kingdom (UK) recently signed a Technological Prosperity Deal (I posted about the Deal here). After Brexit (the withdrawal of the UK from the European Union, EU), it seems that the purpose of the deal is obvious: the UK needs friends and Geopolitical Alliances after having essentially snubbed the EU. The US is the obvious next choice. But, the question remains: what would be the best Geopolitical Alliance for the UK? This post explores that question using the UKL20 Model (for more information about how the model was created, see the Boiler Plate).
The best Geopolitical Alliance for the UK is none, that is, to remain independent in the World-System and conduct Business as Usual (BAU) muddling through as necessary (RW).
In the graphic above are six growth forecasts for the UK1 state space component. From the Political Perspective, the UK-BAU Business As Usual models are the best, better than staying linked to the EU (a rationale for Brexit). The BAU models are unstable (largest eigenvalue greater than 1.0). The weaker models (EU, US, and W) are all stable and lead eventually to a Steady State Economy (a better result for reducing Environmental Degradation). The best short-term, year-to-year model is the Random Walk (RW), just muddling through.
You can experiment with the UKL20 Model and investigate the Technology models (TECHE and TECHP) here.
Notes
- RW Random Walk [11.69 < AIC = 20.71 < 30.63]
- BAU Business As Usual [81.86 < AIC = 87.22 < 91.8 ]
- W World WL20 Input [34.58 < AIC = 60.83 < 82.67]
- US USL20 Input [29 < AIC = 63.25 < 90.17]
- UK UK2_UK3 BAU Input [83.88 < AIC = 89.88 < 94.15]
- EU European Union [60.47 < AIC = 79.99 < 97.75]
- TECHP Technical Productivity [27.43 < AIC = 48.29 < 66.77]
- TECHE Technical Efficiency [61.16 < AIC = 73.08 < 82.33 ]