This is a good model. If you take an old ROM dump from a video game, it's just a pile of bits. You don't know what bits represent code, what represent an image, what represent text, etc. You have to analyze them contextually to actually figure out what is code and what is "data" in context, because without context they are truly one and the same.

That's why encountering something like LISP for the first time (by writing a LISP interpreter, for example) creates a big bang event in form of an imminent intellectual catharsis. People who encountered it just once, will never be able to see the world through the old "meaty" lenses afterwards.