Yes, it's very similar. If you have never seen running,cannot tell the time and the books you read, if you can read, all tell you something different and irrelevant to your own experience, then you have no idea what a four minute mile is.
"Much good in your 'if'". Your if is somewhat flawed, isn't it, Alec? Because we have seen running, we have run, and we can tell time, and we know what four minutes is. We don't have to experience every single experience at first hand to know anything about it.
Also, aren't you rather presuming that "enlightenment" is a permanent condition? Rather like being awarded a PhD, you get "enlightenment" and you got it and you're done? Are you quite sure that that's the case?