David studied as an engineering apprentice with a well known British aircraft company while attending Northampton Engineering College for Aeronautics Engineering and received a Master of Science in 1972 from the College of Aeronautics. He then studied economics at the Georgist School of Economics in London. During a long carrier in engineering in Aerospace, he published 14 technical papers in international journals on related technical subjects. Retired in 2008, David has written a book on economics, Consequential Macroeconomics—Rationalizing About How our Social System Works, and several related working-papers about the model being used in this book, A Mechanical Model for Teaching Macroeconomics and Einstein’s Criterion Applied to Logical Macroeconomics Modeling.