Briefly stated, the Gell-Mann Amnesia effect is as follows. You open the newspaper to an article on some subject you know well. In Murray’s case, physics. In mine, show business. You read the article and see the journalist has absolutely no understanding of either the facts or the issues. Often, the article is so wrong it actually presents the story backward—reversing cause and effect. I call these the “wet streets cause rain” stories. Paper’s full of them.
In any case, you read with exasperation or amusement the multiple errors in a story, and then turn the page to national or international affairs, and read as if the rest of the newspaper was somehow more accurate about Palestine than the baloney you just read. You turn the page, and forget what you know.” –Michael Crichton
This applies to politicians in equal measure, and it’s one of the reasons why I hold Democrats in as much general contempt as I do Republicans.
I am by no means an expert on a lot of things, but there are some subjects where I know my stuff extremely well. So when I see someone go off on, say, gun control, and then proceed to display a breathtaking level of ignorance about the issue at hand, get basic facts and definitions laughably wrong, misdiagnose the problem entirely, make demonstrably false claims, propose counterproductive solutions, and be deliberately deceptive just to get some pet legislation passed, I automatically assume that the politician in question is equally clueless and dishonest about every other social issue. (That goes for Conservatives and Liberals alike, by the way.)
I think much of the problem with politics these days is that too many people are willing to assume that the politicians they support are more competent and honest when it comes to pushing their pet causes. Me, if I know you’re either willfully ignorant or demonstrably dishonest about one subject, I have a hard time believing you at all.