Important reminders in The Limits to Growth: The 30-Year Update concerning crucial non-physical factors that are often overlooked in modeling global systems and the future of civilization:

"... the actual growth of the economy and the population will depend on such factors as peace and social stability, equity and personal security, honest and far sighted leaders, education and openness to new ideas, willingness to admit mistakes and to experiment, and the institutional foundations for steady and appropriate technical progress ..."

(cf Silent Spring (2010-01-14), Forecasting Lessons from Systems Dynamics (2017-07-05), Thinking in Systems (2017-11-03), Dancing with Systems (2019-06-21), Systems Thinking Icebergs (2019-06-27), Insight Modeling (2019-12-31), ...) - ^z - 2020-03-15