Introduction to Social Dynamics through Tree Surgery
A tutorial article on Spectra with a python notebook and an interactive browser simulation model.
Which social norms will emerge in a society? A soft introduction to predicting the behavior of large societies using so-called "tree surgery". It reviews the theoretical and algorithmic methods as an alternative or a complement to agent-based simulations. These tools can be used to predict the emergent behavior of a large society of independent agents in many stylized situations - deciding to wear a facemask outdoors, to use a fork in medieval Italy, to rebel against an oppressive government.
Spot a Random Walk
A test for randomness
One of the lines is a random sample of 100 consecutive days for the price of a specific stock. The other one is a random walk. Can you guess which one's which?
This is a replication of now defunct website that was floating around in the early 2000s.
Solution Concepts
(work in progress)
A graph of all solution concepts in economics by inclusion. It shows all equilibrium concepts with references, indicating generalizations/refinements with arrows. It is largely a perpetual work in progress.
In-browser simulation