In this volume in honour of K. Vela Velupillai, figuers such as Jean-Paul Fitoussi, Paul Samuelson and Robert Solow present cutting edge research in the fields of computability theory, economic dynamics and macroeconomic theory and policy.

Prelude 1. Velupillai's Constructive and Computable Economics, Undecidable Dynamics and Algorithmic Social Sciences Stefano Zambelli 2. From an admirer and a friend Robert W. Clower Allegro: Dynamical Systems, Business Cycles and Macroeconomics 3. The Richard Goodwin circle at Harvard (1938-1950) Paul Samuelson 4. Not growth, not cycles, but something in-between Robert Solow 5. The nonlinear path of macroeconomic dynamics Axel Leijonhufvud Crescendo: Computable Economics 6. The information economy Gregory Chaitin 7. Hypotheses that imply the independence of P = NP from strong axiomatic systems N. C. A. da Costa and F. A. Doria 8. Universal Models Jorma Rissanen 9. Model description length priors in the urn problem Duncan Foley Allegro ma non troppo: Constructivity, Rationality and Complexity in Economic Theory 10. The honeybee as teacher John McCall 11. Constructivist logic and emergent evolution in economic complexity Barkley Rosser 12. Remarks on numerical systems, algorithms and economic theory Richard Day 13. An experiment on equilibrium selection: The relative unimportance of context Håkan J. Holm 14. The complexity of social choice Kislaya Prasad Andante: History of Thought and Methodology 15. Varieties of internal critique Tony Lawson 16. Rational economic man: A centrepiece in social science? Carsten Heyn-Johnsen 17. Resisting the sirens of realism in economic methodolody: A Socratic odyssey Thomas A. Boylan & Paschal F. O'Gorman 18. Who, in Scandinavian economic theoretic literature, picked up major threads fromWicksell's writings? Björn Thalberg Moderato ma non troppo: Capital, viability and growth 19. The Accumulation of Capital over 50 years on G.C. Harcourt & Prue Kerr 20. The means of subsistence and the notion of 'viability' in Sraffa's surplus approach Guglielmo Chiodi 21. A disequilibrium growth cycle model with differential savings Serena Sordi Allegretto: Markets and Their Behaviours 22. Evolution of FX Markets and New Financial Economics Joseph L. McCauley 23. Elasticity puzzle: An inquiry into micro-macro relations Shu-Heng Chen, Ya-Chi Huang & Jen-Fu Wang 24. Bubbles and crashes: A a cyborg approach Ralph Abraham, Todd Feldman and Daniel Friedman 25. Is there gold in the Taylor's Rule? A note on the treasure hunt Francesco Luna 26. The economics of Keynes in an almost stock-flow consistent agent-based setting Charlotte Bruun 27. Minsky's 'financial instability hypothesis': The not-too-Keynesian optimism of a financial Cassandra Elisabetta De Antoni 28. Organizational capabilities and industry dynamics: A computational model Marco Corsino, Roberto Gabriele and Enrico Zaninotto Finale 29. The most difficult questions: A brief reflection inspired by K. Vela Velupillai's contributions in computable economics, evolution and complexity Cassey Lee 30. A homage to my father Viveka Velupillai

Stefano Zambelli is Professor of Political Economy in the Department of Economics at University of Trento, Italy.