You should find a talk in which Jobs explains the philosophy behind Apple. He makes mention of an article that he read in Scientific American magazine. It ranked creatures by the amount of energy each required to get from point A to point B. He explained that human beings come about a third of the way down the list, whilst the concord is the most efficient creature. But, if you allow human beings to use a bicycle (a tool created by the species), we become 3x more efficient than even the concord.

It was July 2011. A group of us needed a place to watch the Super Rugby final. We were spending the uni vacation pruning vines down near Pemberton in Western Australia. After working a half day that Saturday, we got cleaned up and headed into town. Before the hotel, we replenished our supplies at the supermarket and bottle-o. Especially the bottle-o! There is nothing worse than a hard earned thirst without the beer to quench it.

Wisdom is the mark of an educated man, and a fitting definition goes as follows; Wisdom is knowledge and its due use, knowledge of the best ends and best means. A bloke who is open to all possibilities, who does not disregard ends and means based on advise but rather on experience is bound to become sufficiently educated.

Each of our intentions carries a degree of uncertainty. A goal is a weak intention for means of achieving it aren't yet well considered. You are uncertain whether you will achieve it, and in what time frame. Once you want to do something the intention has advanced beyond a goal, through consideration of means and to a choice of specific actions. Certainty is greater, and in a much smaller time frame.

Daily experience is filtered through our worldview with the aim of accurately predicting the future and maximising reward. The Pareto principle tells us that 20% of our mental models will do 80% of the work of filtering experience. A small number of models will support our entire worldview. The first five parts of this book represent the five most important mental models, that if established in your mind, will allow you to build a worldview through experience without further external input.

You ask advice: ah, what a very human and very dangerous thing to do! For to give advice to a man who asks what to do with his life implies something very close to egomania. To presume to point a man to the right and ultimate goal—to point with a trembling finger in the RIGHT direction is something only a fool would take upon himself.