Final answer:
The Braille Alphabet is crucial for the blind to read and write using a system of raised dots felt with the fingertips. Other disabilities require different forms of assistance and adaptations.
Step-by-step explanation:
Without the Braille Alphabet, it would be very difficult for the blind. The Braille system is a method that is widely used by blind individuals to read and write, thanks to its system of raised dots which can be felt with the fingertips. People with other disabilities, such as those who are deaf or mute, might face different challenges that do not necessarily involve the use of Braille. The other excerpts provided also consistently weave a theme of looming evil, hereditary sin, and the struggle with inner darkness, reinforcing this interpretation of the symbolism.