Introduction -- (Rational) Individual Decision Making: Main Ideas -- (Rational) Group Decision Making: General Formulas and a New Simplified Derivation of These Formulas -- How We Can Control Group Decision Making By Modifying the Proposed Options -- The Fact That We Can Only Have Approximate Estimates Explains Why Buying and Selling Prices Are Different -- The "No Trade Theorem" Paradox -- People Make Decisions Based on Clusters Containing Actual Values -- When Revolutions Succeed -- How People Combine Utility Values -- Biased Perception of Time -- Few-Parametric Spatial Models and How They Explain Bhutan Landscape Anomaly -- Dynamic Triggering of Earthquakes -- Applications to Computing: Representing Functions in Quantum -- and Reversible Computing.