“Due to the psychological phenomenon known as hyperbolic discounting, we are not always in agreement with our future selves regarding what these should do. This is why we lock away our money in pension funds and install time locks on our refrigerators. Similarly, I may well be in a position where I, Olle Häggström_today, cannot resist the beef for tonight’s dinner, but feel that Olle Häggström_next week really ought to switch to vegetarianism, while realizing that he (just like me) will most likely be too weak to resist the beef offered on the menu.”
— Olle Häggström, Here Be Dragons: Science, Technology and the Future of Humanity, Chapter “Our planet and its biosphere”, p. 36