World Braille Day

Here is another example of a physical-layer in communication as it applies to fruitful dialogue. And it is also taken from the Mouth Fruit calendar.

Braille is a tactile method of writing and reading using embossing on paper or other method to create raised dots. It was developed by Louis Braille, a blind boy, at the age of 15 in France.

This physical level is important in reading where on can take a little time to ponder.