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The army's explanation was, "A comprehensive grasp of the overall situation is difficult, and the dynamic movement of materials has become extremely difficult to predict due to the influence of multiple factors. Therefore, relying solely on numerical expressions of national strength, which is extremely difficult or even impossible to accurately assess, as the sole condition for decision-making and warfare is extremely dangerous."
In plain words, it's that these matters are unclear, so it's simply forbidden to discuss them, and whoever does is labeled as "lacking the necessary confidence to win" or "not possessing enough of the kingdom's spirit," and treated as unpatriotic, even if you are a princess.
There's simply no proper communication with these people.