Unable or unwilling to see the full picture; having a limited or prejudiced viewpoint, as if wearing blinders like a horse.
From 'blinker' (a device placed on a horse's eyes to limit its vision), adding the '-ed' suffix. The metaphorical meaning developed in the 1800s to describe people with narrow or biased perspectives.
The term is brilliant wordplay—just as leather blinders literally narrow a horse's vision to prevent distraction, a 'blinkered' person figuratively can't see beyond their own narrow worldview. It's a perfect metaphor baked right into the word!
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