[elicash]

Would they need to have done a poor job with the black text? For example, let's say in the sentence: First, ______________ Next, this happened.

If you know where the comma ends and the next sentence begins, you still know the exact number of pixels in between. Let's then assume that there are no proper nouns in the missing text. There probably aren't very many combinations of letters that fit the space perfectly while still making for valid words, given different letters have different pixel widths.

But the idea wouldn't even be to come up with the CORRECT answer. It would be to assign a score to different options of what it could possibly say.

I agree you couldn't do paragraphs.