The paper outlines the business decision making paradigm that prevailed in the 20th century and how the resultant business decisions revealed deficiencies in that paradigm. However, it recognises that some powerful forces in society wish to retain the 20th century model; there is much available evidence to demonstrate the dangers inherent in such a strategy. Those engaged in business decision making today must recognise the urgent need for a paradigm shift away from the 20th century business decision making model, if our fragile planet is to survive in a form able to sustain human life.