During the Seventies, we were convinced that prices control was necessary to cope with inflation. It is, to the contrary, their freeing which allowed France to getting rid of that structural weakness. On the same, it was believed during a long time that the consumption rebound was generating a trade deficit as in 1982. We know today that it is wrong and it was the consequences of the huge increase of the dollar on the oil bill which were at the origin, during that period, of the French trade balance degradation. The recent history is not getting itself always from ...