From Overcoming Bias:
Sometimes when people hear obvious arguments regarding emotive topics, they just tentatively accept the conclusion instead of defending against it until they find some half satisfactory reason to dismiss it. Eliezer Yudkowsky calls this ‘clicking’, and wants to know what causes it:
My best guess is that clickiness has something to do with failure to compartmentalize – missing, or failing to use, the mental gear that lets human beings believe two contradictory things at the same time. Clicky people would tend to be people who take all of their beliefs at face value.
The Hansonian explanation (not necessarily endorsed by Robin Hanson) would say something about clicky people tending to operate in Near mode. (Why?)
Read the rest at Overcoming Bias