Well...

• Assume a container with a finite amount of a material with heavy density (so heavy liquid, or solid) inside it. Can apply a stream of a liquid or gas with constant velocity (so lighter liquids and heavier gas. too light gas very hard to control) in a more global picture (globe being as big as the steady environment surrounding the process) to empty the container out of the heavy material mentioned before. Of course, the heavier the material, the harder the perfect, or proper, completion of the process will be. (Guiding the chaotic nature of the stream of the liquid or gas to perform a more useful task)
• Average: The idea behind taking the average of a set of data is to find a point around which lie the majority of the values, or directions, of such set of data, independently of the nature of the data. When that point is found, it is possible to predict the values of different sets of data, according to different frames of referenece. If a value is assigned to every individual to represent their intelligence, according to a very fair system of measurement, it becomes possible to more accurately place these values in the neighborhood of the average value, and therefore, predict the individual's actions, or foresee their decisions, IF, and only IF, there is enough initial data to be used in the process of determining the right direction of the data sets, since the human brain shows highly dynamic behaviour. (The process of prediction uses the distance between the single value and the average value (in both magnitude and direction sense), along with the data set describing the individuals critical characteristics to evaluate the probability of a certain decision being made or certain action being taken in the individual's case.)
  

NOTE: Sorry for the lack of the proper usage of paragraphs. The blog editor is totally acting like a 10-Euro crackhead manwhore in the back alleys of Kreutzberg.