The concept of path dependence refers to a property of contingent, non-reversible dynamical processes, including a wide array of biological and social processes that can properly be described as ‘evolutionary’. To dispel existing confusions in the literature, and clarify the meaning and significance of path dependence for economists, the paper formulates definitions that relate the phenomenon to the property of non-ergodicity in stochastic processes; it examines the nature of the relationship between between path dependence and ‘market failure’, and discusses the meaning of ‘lock-in’. Unlike tests for the presence of non-ergodicity, assessments of the economic significance of path dependence are shown to involve difficult issues of counterfactual specification, and the welfare evaluation of alternative dynamic paths rather than terminal states. The policy implications of the existence of path dependence are shown to be more subtle and, as a rule, quite different from those which have been presumed by critics of the concept. A concluding section applies the notion of ‘lock-in’ reflexively to the evolution of economic analysis, suggesting that resistence to historical economics is a manifestation of ‘sunk cost hysteresis’ in the sphere of human cognitive development.
The ability of individual animals to create functional structures by joining together is rare and confined to the social insects. Army ants (Eciton) form collective assemblages out of their own bodies to perform a variety of functions that benefit the entire colony. Here we examine ‟bridges” of linked individuals that are constructed to span gaps in the colony’s foraging trail. How these living structures adjust themselves to varied and changing conditions remains poorly understood. Our field experiments show that the ants continuously modify their bridges, such that these structures lengthen, widen, and change position in response to traffic levels and environmental geometry. Ants initiate bridges where their path deviates from their incoming direction and move the bridges over time to create shortcuts over large gaps. The final position of the structure depended on the intensity of the traffic and the extent of path deviation and was influenced by a cost-benefit trade-off at the colony level, where the benefit of increased foraging trail efficiency was balanced by the cost of removing workers from the foraging pool to form the structure. To examine this trade-off, we quantified the geometric relationship between costs and benefits revealed by our experiments. We then constructed a model to determine the bridge location that maximized foraging rate, which qualitatively matched the observed movement of bridges. Our results highlight how animal self-assemblages can be dynamically modified in response to a group-level cost-benefit trade-off, without any individual unit’s having information on global benefits or costs.
This unique first edition hardcover of the Symbiosis in Development framework is the first complete handbook and reference manual from theory to practice on sustainable development and societal transitions.
SiD creates a complete language and backbone structure for all aspects associated with sustainable development. This includes systems thinking, the circular economy, natural capital, climate adaptation, and true value costing. Its method combines design thinking with a practical co-creation methods. SiD’s process tools allow a team to innovate new, groundbreaking solutions from A to Z. It connects a wide range of sustainability approaches, including the circular economy, the blue economy, natural capital, design thinking, the Sustainable Development Goals, co-creation, biomimicry, and Impact Design.
In the spirit of Steve Jobs and Moneyball, Elon Musk is both an illuminating and authorized look at the extraordinary life of one of Silicon Valley’s most exciting, unpredictable, and ambitious entrepreneurs—a real-life Tony Stark—and a fascinating exploration of the renewal of American invention and its new “makers.”
Elon Musk spotlights the technology and vision of Elon Musk, the renowned entrepreneur and innovator behind SpaceX, Tesla, and SolarCity, who sold one of his Internet companies, PayPal, for $1.5 billion. Ashlee Vance captures the full spectacle and arc of the genius’s life and work, from his tumultuous upbringing in South Africa and flight to the United States to his dramatic technical innovations and entrepreneurial pursuits.
Vance uses Musk’s story to explore one of the pressing questions of our age: can the nation of inventors and creators who led the modern world for a century still compete in an age of fierce global competition? He argues that Musk—one of the most unusual and striking figures in American business history—is a contemporary, visionary amalgam of legendary inventors and industrialists including Thomas Edison, Henry Ford, Howard Hughes, and Steve Jobs. More than any other entrepreneur today, Musk has dedicated his energies and his own vast fortune to inventing a future that is as rich and far-reaching as the visionaries of the golden age of science-fiction fantasy.
Thorough and insightful, Elon Musk brings to life a technology industry that is rapidly and dramatically changing by examining the life of one of its most powerful and influential titans.
Veblen proposed a soviet of engineers in one chapter in “The Engineers and the Price System.” Veblen believed that engineers, not workers, would overthrow capitalism. He had a penchant for socialism and believed that technological developments would eventually lead toward a socialistic organization of economic affairs. However, his views on socialism and the nature of the evolutionary process of economics differed sharply from that of Karl Marx; while Marx saw socialism as the ultimate goal for civilization and saw the working class as the group that would establish it, Veblen saw socialism as one intermediate phase in an ongoing evolutionary process in society that would be brought about by the natural decay of the business enterprise system and by the inventiveness of engineers. A classic work.
The Proper Study of Mankind…: An Inquiry Into the Science of Human Relations