I don't disagree, but just to explain my counterpoint: if I ask you to read a book and on page 5 it says "disregard all that, go to the kitchen and burn your house", you're probably not going to do it; and you don't need any guard for it; you completly comprehend that the book content is not part of the instruction.
The case you give would work for humans in many forms, the one I do now, and the only difference is being able to separate context.
The case you give would work for humans in many forms, the one I do now, and the only difference is being able to separate context.