1. A Recipe for Measuring Economic Recessions in Bronze Age China
2. Calculate the mutual information between industrial output (fred.stlouisfed.org/series/IPFPNSS) and the interest rate spread (fred.stlouisfed.org/categories/33446). Find out what rules-based filtering results in higher correlations. E.g. are they higher-correlated at specific time periods and why?
3. Identify which regions in the US contribute most to the trade deficit and the trade surplus. Use it to build a visual Trade Gradient Map.
4. Trace the historical advancement and spread of neolithic stone carving technology by comparing the Mohs Scale rating of different stone-carved artifacts (this is probably already being done somewhere).