Persistent, Niggling Questions

[catalina_marina]

Originally Posted by Nate the Great

Okay, the O's are the dots. Both of the imaginary Braille letters are two dots with a third below it to the left. The difference is that the first has the triangle at the top of the grid, and the second has the triangle at the bottom of the grid. Therefore, different symbols. A blind person would have no idea which is which without knowing where the top of the line is.

Okay, my bad. In that case I have nothing to add to KJ's reasoning.

Have you checked that these things actually exist though? I'm pretty sure not all possible symbols are actually used...