Culturally constructed ignorance

Clive Thompson from Wired:

"...Normally, we expect society to progress, amassing deeper scientific understanding and basic facts every year. Knowledge only increases, right?
Robert Proctor doesn't think so. A historian of science at Stanford, Proctor points out that when it comes to many contentious subjects, our usual relationship to information is reversed: Ignorance increases.
He has developed a word inspired by this trend: agnotology. Derived from the Greek root agnosis, it is "the study of culturally constructed ignorance."

As Proctor argues, when society doesn't know something, it's often because special interests work hard to create confusion. Anti-Obama groups likely spent millions insisting he's a Muslim; church groups have shelled out even more pushing creationism. The oil and auto industries carefully seed doubt about the causes of global warming. And when the dust settles, society knows less than it did before.
"People always assume that if someone doesn't know something, it's because they haven't paid attention or haven't yet figured it out," Proctor says. "But ignorance also comes from people literally suppressing truth—or drowning it out—or trying to make it so confusing that people stop caring about what's true and what's not."
... continues...