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The original was posted on /r/todayilearned by /u/Jay_B_ on 2025-01-26 23:09:49+00:00.

Original Title: TIL that 2.5% of people are affected by prosopagnosia, or face-blindness. Symptoms include an inability to recognize people you know, and finding a vague familiarity in strangers who bear some resemblance to loved ones. Causes range from genetic to acquired, which sometimes spontaneously resolves.