Modern and deadly times
The twentieth century supplied the most lethal counsel in human history. Russian Tsar Nicholas II listened to his wife and to Rasputin, who urged him to suppress with an iron fist any demand for reforms, a course that led to the Bolshevik Revolution and the liquidation of his dynasty.
In the 1930s, France invested a fortune in the Maginot Line while ignoring the fact that Germany would simply bypass it in 1940. Britain, meanwhile, adopted Neville Chamberlain's counsel to appease Hitler in the Munich Agreement of 1938, a step that only hastened the outbreak of the Second World War. In that war, Hitler himself repeated Napoleon's mistake and invaded Russia in 1941; the cold enemy known as "General Winter" became a turning point in the war against the modern enemy of the Jews, may his name be erased, though the decline of his regime was, tragically, far too slow.
The heaviest economic and social disaster occurred in China in 1958, when advisers convinced the leader and general Mao Zedong to exterminate all the sparrows in his country's skies. The disappearance of the sparrows in China led to an explosion in the locust population and to a severe famine in which tens of millions of people starved to death.
The bottom line: the consequences of the counsel given by advisers in the past were far worse than those of today's advisers. But it is worth learning from this that sometimes it is better to throw the advice into the recycling bin and go with your heart, with the comforting knowledge that, unlike in the past, your adversary will not receive it on a silver platter.