> Raynal’s lifestyle was becoming so unbalanced that his family was beginning to worry about him. One day, he ran out of his room in a panic, telling them that all of the color had bled out of his vision. His mother bustled him off to an ophthalmologist, who told him he appeared to have disrupted the photoreceptors in his eyes by staring so long at a monitor screen. Thankfully, the condition persisted only a few hours. But then there came a day when he suddenly couldn’t understand anything that was said to him; he had apparently become so attuned to the language of computer code that he could no longer communicate with humans. That worrisome condition lasted several weeks.

This sounds hard to believe. A lot more people use computers nowadays, for equally long periods of time if not more, and neither of these symptoms seem to be a thing. So... what's going on here? Embellishments to the legend?