Rolf Strijdhorst - 2 days ago

Dear Professor Keen (and dev team),

I have developed a multi-sector Stock-Flow Consistent (SFC) model in Ravel (astra-europa-sfc-scenario-b2.mky) to test the macro-financial dynamics of an unconditional basic income floor (Citizen Dividend) funded by a direct tax on speculative asset stocks.

The model explicitly addresses the core mechanism you highlight in your work: preventing the exponential accumulation of private debt (AD = Income + dD/dt) and shifting credit allocation away from speculative collateralization toward productive output.

Key Model Features & Findings:

  • Private Debt Stabilization: Under baseline conditions, private debt/GDP grows unconstrained toward 2.5. Under the asset tax & dividend floor, private debt dynamics stabilize across 50- to 99-year simulation runs (peaking early at 0.96 to 1.20 under low-growth yields and settling gracefully).

  • Godley Table & Ravel Flow Architecture: The model couples the Banking Sector, Non-Bank Public, and a Central European Redistribution mechanism through balanced double-entry accounting.

  • Stress Testing Yield Environments: Runs were executed across four asset yield scenarios (3% to 6%). Aggregate demand floor stability is maintained throughout.

I have linked the model file along with a technical addendum detailing the transmission channels (repo collateral compression and equity yield re-orientation toward dividends) and addressing standard Post-Keynesian concerns regarding demand-pull pressure.

As a user of Ravel, I would be extremely grateful for any feedback from you or Russell on the Godley table setup or parameter scaling.

Best regards,

Rolf Strijdhorst

Platform & Systems Engineer / Astra Europa founding member

rolfst on Codeberg, X.com, Threads

 

Last edit: Rolf Strijdhorst 2 days ago
astra-europa-sfc-scenario-b2.mky