Oh! This point had evaded me: I thought x encoded the program and the input, not just the entire history. So U, instead of executing, just locates the last thing written on tape according to x and repeat it. Well, I’m disappointed… at U and at myself.
Oh! This point had evaded me: I thought x encoded the program and the input, not just the entire history.
So U, instead of executing, just locates the last thing written on tape according to x and repeat it.
Well, I’m disappointed… at U and at myself.