We don't need to think about AI. I'd rephrase your question like this: What can the author do, sitting at a computer, that later readers can't undo? When phra

We don't need to think about AI. I'd rephrase your question like this: What can the author do, sitting at a computer, that later readers can't undo? When phrased that way the answer is obvious: a lot. Like multiply two large numbers together, or obfuscate a program to make its meaning less clear. Both are in principle possible to undo, but the "load factor" can be arbitrarily large, making the effort for the 'reader' entirely uneconomic. If even a human can't undo some things that the author did, how can we expect the computer to do so?