Linked from
The 17 pages that link to Braille, each with the reason it gives.
BlindnessRelated: It enables literacy and independent access to written information through touch.
PunctuationRelated: Braille uses dedicated dot patterns to represent punctuation for touch reading.
FingerRelated: Fingertip sensitivity allows Braille symbols to be distinguished by touch.
Visual impairmentRelated: It offers a nonvisual way to read and write when print is inaccessible.