unable to distinguish smart people from dumb ones, as in a person exhibiting the Dunning-Kruger effect. Smart-blind people tend to fall for conspiracy theories, think crystals can heal you, and believe astrology is for real. They will contradict experts in blog comments on topics they know nothing about.
Look what this smart-blind tool just wrote in the comments on Bad Astronomy! He doesn't think Phil Plait can identify Jupiter in a video shot by a TV camera in New York City.
Oh, look, a follow up. He's never even been to a big city before.