State Space Models

All state space models are written and estimated in the R programming language. The models are available here with instructions and R procedures for manipulating the models here here.

Sunday, March 23, 2025

Wolf Hall II and the Modern World System (1450-1640)

 


I hope you are watching the final episodes of Wolf Hall Season 2 on PBS starting last Sunday, March 23, 2025 (the link is here and you might find parallels to the current political situation in the United States). In a prior post (here) I discussed Season 1. In this post, I will start laying some groundwork for Season 2. In future posts, I'll comment on the remaining episodes.

Thomas Cromwell, the central character in the Wolf Hall TV series, lived from 1485-1540 during a period called the Long Sixteenth Century (L16, more information will be posted here). Cromwell was Henry VIII's chief minister and played a prominent role of the beginning of the English Reformation.

To help me understand the The Tudor Period (1485-1603), I've constructed a number of state space models for England, France, Spain, Italy, Germany, Portugal, the World System and other countries in the World-System using available historical statistics (see the country models here that will be attached to future posts)The most noteworthy aspect of my WL16 state space World System model (here) are the two Growth Error Correcting Controllers (ECCs), one is an environmental controller (Q-T) and another is a Malthusian Population and Production controller (Q-N)--see the Measurement Matrix in the Notes below. I can also compare the WL16 model to a conventional economic growth model driven by technological change.*


In the  Wolf Hall TV series, we are seeing the Tudor elites (Thomas Cromwell and Henry VIII) in all their splendor. All the heavy, elegant clothing had a purpose: the castles were cold and drafty and this was the Little Ice Age in Europe (graphic above from Waldinger, 2022). We find out little about the lower classes in the TV series, but we can be sure they suffered.

Another important aspect of the Long Sixteenth Century was that it was the start of Capitalist Agriculture and the formation of the World-System (discussed here and here). The evolution of the World-System is my primary interest in the Wolf Hall TV series because it helps bring the history to life.

Historical re-interpretation is another way to bring history to life and Hillary Mantel does this in Wolf Hall (see the Real Story Behind Wolff Hall and the Fall of Cromwell from the Smithsonian Magazine).


I'm going to extend Hillary Mantel by including John Dee (a character not in "Wolf Hall"). ChatGPT (here) reports that Henry VIII "...did rely on astrologers like John Dee (who later advised Elizabeth I) and may have had private interactions with individuals claiming to predict the future." In the graphic above, I assume that sometime before Cromwell's execution, John Dee made two predictions, one (optimistic forecast) for Henry VIII and one (less optimistic) for Thomas Cromwell. The optimistic forecast was "unlimited growth forever" (the dotted green line in the graphic above) and the less optimistic forecast (the black-blue line) for a Limit to Growth (the dashed red line was the Random Walk--history is just one damed thing after another).

I'm going to imagine that Henry VIII's response to the optimistic forecast was "Surely, Doctor Dee, I should care not for such World Systems when my appetites are solely for England."** Cromwell was not so dismissive in his response but encouraged Master Dee to focus on the best Geopolitical Alliance Henry might find through marriage. 



Dr. Dee went back to his extensive library in Mortlake, Surrey in England, dusted off his protractor and constructed geometric forecasts for Henry VIII and later Elizabeth I (Henry's daughter). In these forecasts, Dee was careful not to be seen as an unwitting tool of evil spirits. In future posts I will report on modern day versions of Dr. Dee's imaginary forecasts and concentrate on finding the best Geopolitical Alliances for Tudor England.



Notes

* The Environmental and Malthusian controllers are not the only ECCs that can exist is a socio-technical system, but they were the most important in the Long Sixteenth Century. Dynamic Component Models (DCMs) divide system variables into growth and cyclical component state variables. The growth component is equivalent to an economic growth model. The feedback components describe ECCs. Neoclassical Economic Growth theory has no concept of feedback and Climate Change models have struggled to identify feedback loops in Human Systems,

** Unfortunately, for Henry VIII's appetites and intuitions, the World System (specifically the WL16 model) was an important driver of England's development during the Long Sixteenth Century.

Data were taken from the Maddison Database and the Measurement Matrix (below was constructed from the available data using Principal Components Analysis, PCA). Q =  Aggregate Production, N= Population and T = Global Temperature. During the Long Sixteenth Century there was no concept of Aggregate Production, Aggregate Population, Global Temperature or the World System.



More detail about the model will be made available in future posts. You can run both and unstable and stabilized version of the WL16 model here. For more technical information, see the Boiler Plate.


Links

No comments:

Post a Comment