American Journal of Agricultural Economics. p. 659-661. Book review. Dynamic and Stochastic Resource Economics: Essays on Biodiversity, Invasive Species, Joint Systems, and Regulation. Michel Wetzstein. email protected Search for other articles by this author. First published: 15. https: doi.org. Economics is the study of decision-making by rational people. Decision making involves choosing between different systems, and people make decisions between income and losses. When there are multiple options, the goal of rational people is always to maximize net income equal to income minus loss. People attended the symposium organized by the Chair of Production and Resource Economics PuR and the Hans Eisenmann Forum for Agricultural Sciences HEF. Moderated by Heike Zeller, a round table bringing together experts in agricultural policy and climate protection: The aim of the event series, In light of the above, we can identify four golden rules for effective drafting social science essays: Answer the question that is asked: Write your answer in your own words: Think about the content of your essay, making sure to demonstrate good social science skills.