It was written after the fact
The objection
Vaticinium ex eventu — prophecy after the event — is not an ad hoc excuse invented for the Bible. It is a well-documented literary practice across the ancient Near East and the Greco-Roman world, found in Akkadian prophecy texts, in Egyptian material, and throughout Jewish and Christian apocalyptic. Ancient authors wrote in the name of a revered figure from the past and had him foretell events the author had already lived through. It is the standard scholarly explanation for detailed 'prediction' precisely because it explains the data so cleanly, including the signature pattern: sharp accuracy up to the author's own moment, then vagueness or error immediately after. Daniel 11 displays that pattern exactly. And the explanation requires nothing miraculous and nothing dishonest by ancient standards — pseudonymous composition was a recognized genre, not a forgery.
The response
This is the strongest objection to the whole category and it is why this page refuses to argue in a circle. Three honest responses, none of them a knockout. First, the explanation is powerful precisely because it is unfalsifiable in the general case: any prophecy whatever can be redated after its fulfillment, so the framework can never lose. That is a reason to demand independent dating evidence rather than to dismiss the objection. Second, independent dating evidence is exactly what the messianic material has and what Daniel is fighting about. The Great Isaiah Scroll and the pre-Christian Greek translation of the Hebrew Scriptures put the text of the servant passages, the birthplace oracle, and the seventy weeks in circulation demonstrably before the events they are applied to — that is not a Christian claim about a Christian document, it is a manuscript fact about Jewish documents preserved by non-Christian hands. Third, where the dating genuinely is contested, as with Daniel and Deutero-Isaiah, this page does not use the passage as evidence. That is a real cost and it is paid above.