You embossed a letter because you knew how to emboss. I could look up the braille alphabet for the letter faster than I could learn how to, and actually, emboss the letter itself. You don’t even need to look it up. Braille Neue is a great font that prints the roman letters with the braille locations you can then emboss. Since braille is a letter for letter transcription of English, again, what is the utility to the blind for widespread learning by the sighted? It isn’t sign language, which is a distinct language used by the hearing impaired to communicate. It is literally just a 3d font.