
It all goes back to 2 factors:
1. Anti-intellectualism in the US. When an expert says something that seems counter intuitive, painful, or somehow "disturbing", people are very quick to dismiss her for a wide array of often non-scientific reasons. Also, more often than not, the average people simply don't understand the science behind things. Sure there are no absolute guarantees and a scientist will be the first to admit that, but a 92nd percentile (for example) is VERY different than a 50-50shot

2. There are a lot of self-proclaimed false prophets out there that take advantage of the readily available public media (Internet, TV, etc) who claim to know things or advocate things where in reality they have absolutely NO business talking about. Anything from arguing for or against "global warming", or "vaccination", or stem cel research, or evolution, or global economics, or politics, etc etc ... unfortunately this is also feeding the #1 above.
I read a quote on an iced-tea cap recently that said something along the line lines that the illiterates of the 21st century will be the ones that aren't able to learn, forget, and relearn
As a people we have to start learning to deal with the massive amount of mis-information that is mixed in with information. Long ago, you'd go to the expert and whatever he or she said would pretty much go (right or wrong). Now, everyone thinks he or she is an expert in everything ... and if not, they think they can find quick answers not stopping to think where the answers are really coming from.

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