You cannot switch off reading, even when you want to.
When the word RED is printed in blue ink and you must name the ink colour, you stumble. John Ridley Stroop showed this in 1935: reading runs automatically and cuts in front of deliberate colour naming. It is one of psychology's most stable effects and practice does not remove it.
Useful: Automatic habits can't be switched off, only overridden – which is why relearning always costs time.
Source: en.wikipedia.org