<
http://www.nytimes.com/2005/03/13/opinion/13sun3.html>
By ADAM COHEN
Published: March 13, 2005
-snip-
Nowhere are analogies more central than in politics. When Karl Marx wanted to arouse the workers of the world, he compared the proletariat's condition to slavery and, in "The Communist Manifesto," urged them to throw off their figurative chains. When Roosevelt argued for a balanced budget, he put it in homespun terms. "Any government, like any family, can for a year spend a little more than it earns," he said. "But you and I know that a continuation of that habit means the poorhouse."
The power of an analogy is that it can persuade people to transfer the feeling of certainty they have about one subject to another subject about which they may not have formed an opinion. But analogies are often undependable. Their weakness is that they rely on the dubious principle that, as one logic textbook puts it, "because two things are similar in some respects they are similar in some other respects." An error-producing "fallacy of weak analogy" results when relevant differences outweigh relevant similarities. On "Fresh Air," Mr. Norquist seized on a small similarity between the estate tax and Nazism and ignored the big difference: that the Holocaust, but not the estate tax, involved the murder of millions of people.
The last election was decided, in significant part, on specious analogies. A man who went to war, and came back to protest that war, was compared - by a group whose name helpfully contained the phrase "for truth" - to men who betray their country. Today, the federal tax system - which through much of the nation's history kept government income and expenditures in rough balance - is being compared to "theft" and recklessly dismantled.
-snip-