Reading by Touch

One day at the bank, I noticed something odd, so I wrote this riddle in Braille.



https://gizmodo.com/how-braille-was-invented-1471756840
What should I call you? I prefer David or Dave, but students uncomfortable with first names can call me Professor or Mister Hodges. My ESL students' charming solution, "Mister David" is my favorite by far.
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