I agree that we should be careful with personal anecdotes, that's why I did not comment earlier. But I can say that personally I was also able to do it without

I agree that we should be careful with personal anecdotes, that's why I did not comment earlier. But I can say that personally I was also able to do it without looking to some extent (perhaps a whole sentence with very low issues to correct), and I'm slowly losing that ability (which was accentuated with a change of hardware, but I was also feeling the loss of accuracy beforehand).