There is no braille cave to get deoxys.
he isn't a scientist
By using cut.
dotted hole is on the south side of six island. (the sapphire is in there) a little extra info: dotted hole does have braille in it.
I think it has something to do with braille. And the move dig. If I'm not correct, look it up on youtube.
You need to have completed the Rocket base on Island One and defeated the Rockets in the Ice Cave on Island Four, once you completed them you will be allowed access to read the Dotted Cave Braille.
The braille cave is south-west of Paciflidog, use HM dive when you see a dark patch of water surrounded by six rocks.
You have to Run around the Cave 3 times
On island one, there is a cave with a ruby and a full set of braille alphabet.
google braille and translate the braille in the game on a piece of paper, or look up Regice on Bulbapedia for direct translations.
Go up here.
Louis Braille was not a scientist. He was a teacher at a school for the blind, and also the developer of a tactile writing system for blind people.