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Blind people became aware of the pattern of dots primarily through tactile methods, such as using their fingers to feel raised dots on surfaces. The introduction of Braille in the 19th century, developed by Louis Braille, provided a systematic way to represent letters and numbers using a series of raised dots arranged in specific patterns. This tactile reading system allowed blind individuals to access written information and communicate effectively, enhancing their education and independence.

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3d ago

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