fluxgate writes: Steve Mann (who you might know for his having pioneered wearable computing as a grad student at MIT back in the 1990s) writes in IEEE Spectrum magazine about his decades of experience with computerized eyeware. His article warns that Google Glass hasn't been properly engineered to avoid creating disorientating effects and significant eyestrain. While it's hard to imagine that Google has missed something fundamental here, Mann convincingly describes why Google Glass users might experience serious problems. Full disclosure: I'm an editor at IEEE Spectrum.
"Well, it don't make the sun shine, but at least it don't deepen the shit."
-- Straiter Empy, in _Riddley_Walker_ by Russell Hoban