I take it the problem is that it doesn’t unpack even though it does have a truth value. Or at least it isn’t obvious how to unpack it. It’s a false negative candidate.
So the point is that it is a sentence that demonstrates a problem with using unpackability as a requirement for qualifying as meaningful English? That seems reasonable.
Note that the universal “All sentences are either true or false” also, doesn’t appear to meet the unpackability requirement, though I’m not confident I know how to make a Tarski sentence out of that.
I take it the problem is that it doesn’t unpack even though it does have a truth value. Or at least it isn’t obvious how to unpack it. It’s a false negative candidate.
So the point is that it is a sentence that demonstrates a problem with using unpackability as a requirement for qualifying as meaningful English? That seems reasonable.
That’s what I got from it.
Note that the universal “All sentences are either true or false” also, doesn’t appear to meet the unpackability requirement, though I’m not confident I know how to make a Tarski sentence out of that.