excelent article by Tim Vickery on the invention of the full-backs in Brazil (and their importance for Brazilian football since the 50s), which led to the invention of the 4-3-3 by Brazil, which led to the invention of the 4-4-2 by England.
the questions he answers below are also interesting.
http://news.bbc.co.uk/sport2/hi/football/6494653.stm
the questions he answers below are also interesting.
http://news.bbc.co.uk/sport2/hi/football/6494653.stm