Kalecki is widely regarded as one of the leading theorists in the Post-Keynesian tradition and Theory of Economic Dynamics is one of his most influential works.

Bob Sproull is an Independent Consultant and the owner of Focus and Leverage Consulting. Bob is a certified Lean Six Sigma Master Black Belt and a Theory of Constraints Jonah. Bob has served as a Vice President of Quality, Engineering and Continuous Improvement for two different manufacturing companies, was a GM for a manufacturing company, has an extensive consulting background in Healthcare, Manufacturing and Maintenance and Repair Organizations (MRO) and focuses on teaching companies how to maximize their profitability through an integrated Lean, Six Sigma and Constraints Management improvement methodology. Bob is an internationally known speaker and author of numerous white papers and articles on continuous improvement. Bob’s background also includes 9 years with the Presbyterian University Hospital complex in Pittsburgh, PA where he ran the Biochemistry Department at Children’s Hospital, performed extensive research in breakthrough testing methods and assisted with the development of organ transplant procedures. Bob completed his undergraduate work at the University of Pittsburgh and University of Rochester with a dual Math/Physics major. A results-driven Performance Improvement Professional with a diverse healthcare, manufacturing, MRO and technical background, he has significant experience appraising under-performing companies, developing and executing highly successful improvement strategies based upon the integration of Lean, Six Sigma, and Constraints Management methodology. Bob is the author of four books, including, The Focus and Leverage Improvement Book, CRC Press, Taylor and Francis, 2018; The Problem-Solving, Problem-Prevention, and Decision-Making Guide - Organized and Systematic Roadmaps for Managers, CRC Press, Taylor and Francis, 2018; The Ultimate Improvement Cycle: Maximizing Profits Through the Integration of Lean, Six Sigma and the Theory of Constraints (Productivity Press, 2009) and Process Problem-Solving: A Guide for Maintenance and Operation’s Teams (Productivity Press, 2001), and co-author of Epiphanized: Intergrading Theory of Constraints, Lean and Six Sigma (North River Press, 2012), Epiphanized: A Novel on Unifying Theory of Constraints, Lean and Six Sigma,2nd Edition, and Focus and Leverage: The Critical Methodology for Theory of Constraints, Lean, and Six Sigma (TLS).
Degrees, Certifications, and Memberships:
Bachelor of Science Equivalent in Math and Physics, University of Rochester, Rochester, NY
Certified Lean Six Sigma Master Black Belt, Kent State University
Certified Six Sigma Black Belt, Sigma Breakthrough Technologies, Inc.
TOCICO Strategic Thinking Process Program Certificate
TOC Thinking Processes (Jonah Course) L-3 Communications
Critical Chain Expert Certificate, Realization Technologies
Lean MRO Operations Certificate, University of Tennessee