A concept is an abstraction that we use because it makes it easier to communicate. Although it seems that the concept of “concept” is easy to grasp, there are quite a few pitfalls with concepts. Naively there is the risk of taking the concept to be the same as a real thing as both are…

How do you proof that you analysis is correct? Well, first of all a proof might be too strong a demand. Maybe, it is enough to have an analysis that is probable. For normally a proof would need a double blind random test which is not feasible within football. A good alternative would be Bayesian…

Most people have heard that correlation is not causation. Yet, almost no-one has heard that correlation is not correlation. Technically, correlation only establishes a measure of how much two lines are similar to each other. This measure of similarity is not even undisputed as it uses the least square method of the regression of the…

Cybernetic Big Five Theory is the most scientific way of looking at personality as it is based on neuroscience rather than psychology. Cybernetic Big Five Theory is of course a form of cybernetics. The first lesson of Cybernetic Big Five Theory is that there isn’t such a thing as personality. Thinking in terms of traits…

What is the best way to develop youth players? To answer this question you first have to split this question into two questions: How to develop youth players before puberty? How to develop youth players during and after puberty? The reason why these are two different questions lies in the fact that the brain works…

The error ratio is the most overlooked statistics in football. In fact almost no data provider does report it directly. Instead they think that you need to derive it yourself using the data of the opponent. The reason is that almost all data providers measure what players do, but do not measure what players fail…