I was not born then, but AFAIK it's a well known fact that the french governement at that time was nonexistent at best, leaving the army with virtually no command. It has been stated by thousands of soldiers, one of which was my grandfather: They stood literally inactive for days with no orders. Then, they were told to surrender! Now I think it wouldn't have changed the outcome as the germans, as parent post says, were allowed to build up their army for years and were clearly superior at least in their equipment. But the political background WAS a significative part of the disaster.