Teaching modern football

Modern football is nowadays played by thinking players that, having learned some principles, can read a situation and play it. To using a parallelism, you can think like someone who want to learn a language (maybe English), this person can learn some sentences and he will always use them, it is easy and fast, but what if the conversation becomes more complex? So, this would be like to play as old football school. Otherwise someone who spends a lot of time learning the words, he would spend ...