It quarrels on the best model of banking regulation, but the key is to determine the criteria against which we fight. However, two representatives of the Bank of England, during the global meeting of central bankers in Jackson Hole in the US, have appointed what they believe to be the relevant criterion: simplicity. In a short intervention, they stressed that the North American banking regulation would make about 30,000 pages and 60,000 pages for the European Union. Entitling their speech "Dog and Frisbee", they said that it is equivalent to require that a dog learns Newton's laws before catching the Frisbee. Under these conditions, many would would like to return to Glass-Steagall Act, the mere fact that this law was simple.