papers

Publications (10)

physics.soc-ph2026

The Rise and Possible Decline of Societal Complexity

Theodore Modis

Societal complexity may be at a historical peak. Distinct from entropy, complexity tends to rise as systems move away from order, crest at an intermediate state, and decline as ent…

physics.soc-ph2025

Complexity in the Wake of Artificial Intelligence

Theodore Modis

This study aims to evaluate quantitatively, albeit in arbitrary units, the evolution of complexity of the human system since the domestication of fire. This is made possible by stu…

physics.soc-ph2024

American society keeps a lid on the number of deaths from guns and car accidents but not from mass shootings

Theodore Modis

The number of deaths from car accidents and from the unlawful use of guns can be described by logistic growth curves. The annual rates of both have traced completed logistic trajec…

physics.soc-ph2025

Forecasting Energy Needs with Logistics

Theodore Modis

The logistic function is used to forecast energy consumed worldwide and oil production in the U.S. The logistic substitution model is used to describe the energy mix since 1965 pre…

physics.soc-ph2024

The Preponderance of Electric Vehicles and the Availability of Green Electricity

Theodore Modis

The main advantage of electric vehicles, namely, their non-polluting operation, is compromised when the electricity they use comes from burning fossil fuels. The number of electric…

physics.soc-ph2025

Forecasting the Mix of World Energy Needs by mid-21st Century

Theodore Modis

The logistic function is used to forecast energy consumed worldwide. The logistic substitution model is used to describe the energy mix since 1965 presenting a picture significantl…

physics.soc-ph2025

A Hard-Science Approach to Kondratieff's Economic Cycle

Theodore Modis

In an effort to evidence the Kondratieff cycle more scientifically than the way economists do, physical variables are studied rather than monetary indicators. Previously published…

physics.soc-ph2025

The Normal, the Natural, and the Harmonic

Theodore Modis

Use is made of rigorous definitions for the terms normal, natural, and harmonic to reveal a number of unfamiliar aspects about them. The Gaussian distribution is not sufficient to…

physics.soc-ph2025

Links between Entropy, Complexity, and the Technological Singularity

Theodore Modis

Entropy always increases monotonically in a closed system but complexity increases at first and then decreases as equilibrium is approached. Commonsense information-related definit…

stat.AP2022

Forecasting: theory and practice

Fotios Petropoulos, Daniele Apiletti, Vassilios Assimakopoulos +77

Forecasting has always been at the forefront of decision making and planning. The uncertainty that surrounds the future is both exciting and challenging, with individuals and organ…