Originally Posted by Ortep
And of course there is this other 'little' problem even if page numbers themselves were acurate You make a note of an important part of your book. You remember it was on page 246. You go on reading and after a while you find it is a bit to dark and you increase the font size or change the font type (I do that all the time) When you want to go back to the 246 you'll end up in a totally different part of the book.
Yes, if you change fonts mid-read, it'd be no better or worse than what we have now.
But, if you don't change fonts while reading a book (I never do), it would be an improvement over what we have now.