He is currently developing multi-industry SD-based economic models of the Eurozone, Lithuania, Ukraine, and North Dakota. He also teaches SD-based courses in economic dynamics, monetary policy, macroeconomics, and microeconomics to students in Ukraine, Lithuania, and the United States. Prior to joining academia, he was a private consultant. Long ago, he taught public school students at lower, middle, and upper levels. Even further back in time, he was a staff assistant to the President of the United States.