Because a request in the future tense doesn't stick. Words created in past or future tenses tend to get lost in the matrix of reality. The past ones because they have already been experienced, the future ones because they are indefinite enough as to not be affixed to the particular ever-present continuum.1 And the counterpart: verbs in the present tense are fixed to the continuum in a way that they are manifested without question, doubt or delay. That's a grammatical rule with a mechanism behind it, and it explains a feature of the whole spellbook. Every incantation is phrased as something happening now, because here present time is all that matters, and a verb that isn't present-tense has nothing to attach to.
Before the tense rule there's a division that makes it make sense. Magic words come in two main forms: Magical Names, and Magic Words proper.2 Magical Names identify things and entities. A name can correspond to a group of beings or to a single magical entity — celestial beings, divine entities, and others besides. A warning attaches: there is a whole host of entities out there and not all of them are good, so caution is required. Magic Words correspond primarily to Actions, and to arcane non-descript vocabulary. What they do is stated plainly: they tell the universe what the main intention of the wizard is regarding reality. So the split is nouns and verbs. Names point at something; words state an action. And the tense rule applies only to the second kind, because only the second kind is a verb.
The reasoning runs through what an action is here. As verbs, magic words exist in the matrix of reality as actions — and actions are constructs which exist in the ever-present manifestation of time and space.3 That's the premise. An action isn't a thing that happened or will happen; it's a construct occupying the present, and the present is where the matrix is.
Which makes the tense rule a matter of address rather than of style. A present-tense verb names something that exists where the matrix is, so it can be affixed. A past-tense verb names something already experienced and therefore no longer there to attach to. A future-tense verb names something too indefinite to have a location yet. A spell in the wrong tense isn't weaker — it has nowhere to land.
So the failure is not a weak spell. A wrongly-tensed verb points at a place the matrix is not, and the utterance goes nowhere rather than going somewhere feebly. That is a different diagnostic from most of the failures in this curriculum, which tend to be about insufficient charge or an unprepared operator. Here you could be perfectly prepared and still be speaking to an address that does not exist.
There's a practical consequence of the two-kinds split that the section implies rather than states, and it matters for how an incantation is built. A name identifies. That's all it does — it points at a being or a class of beings, and pointing is not an instruction. So a name on its own doesn't tell the universe anything about intention; it needs a verb in the same utterance to say what is being done, or what is being asked.
A magic word doesn't need that. It is already the action, already present-tense, already an instruction. Which is why the shortest and most powerful incantations in the system can be single words — a one-word orison is a True Word, and a True Word is a verb that acts directly on reality with no supporting structure.
That's the structural difference between the two kinds. Names are addresses and words are instructions, and an incantation needs at least one of the second.
The section then splits the arcane vocabulary itself, and the two halves have very different standing. The Ancient Words are so old that their original meanings have been lost. And yet they still carry a powerful magical magnetism, sufficient in itself to generate energy and effect changes in reality.4 The other type are words created through Kabbalistic methods — built rather than inherited. Put those next to the word-is-a-number-is-a-code mechanism and something interesting happens. If a word works because its numerical value resolves to a code, then a word whose meaning is lost still has its value, because the letters haven't changed. Meaning was never what the mechanism ran on. So the survival of the Ancient Words isn't a mystery the system has to explain away — it's exactly what the mechanism predicts.
And the constructed words are the same claim from the other end. If you can compute a value, you can build a word to have it, which is what "created through Kabbalistic methods" means. One half of the vocabulary is inherited and unintelligible, the other manufactured and understood, and both work for the same reason: neither is running on meaning. That also puts the earlier admission in a different light. The orisons' meanings being lost to time is reported as a limitation elsewhere in the curriculum, with Academic Wizards still studying to recover them. Under this account there is nothing to recover for operational purposes — the recovery would be scholarship, not repair.
The secrecy rule returns here with the sharpest version of its reasoning, and it's about character rather than about capability. Magic words are called the true core of Magical Lore, and those who know their importance are truly blessed — which is precisely why these words of the divine must be kept away from three groups: those who only seek power regardless of consequence, those whose only interest is self-gain, and those whose hearts are as dark and evil as the very fallen ones.5 Note what isn't on that list. Not the untrained, not the unready, not beginners. The exclusions are all about motive, which matches the First Ring's warning about who should not learn High Magic at all — and matches the reason given elsewhere for hiding orisons, which was that they work with very little experience.
The danger of a magic word here is never that it is too hard. It is that it is too easy for the wrong person, which is the same reasoning that hid the orisons and the same reasoning that turns away a student with the wrong motive.
Three checks fall out of this section, and all three can be run on any incantation before it leaves your mouth. Find the verb. If the formula contains only names, it identifies something and instructs nothing — you have an address with no message. Most of the printed incantations pair the two, and the pairing is what makes them operative.
Check its tense: it must be present. Anything else gets lost in the matrix, either because it's already been experienced or because it's too indefinite to be fixed to the continuum. This is worth actually checking in a translation, since Latin and Greek verb forms are where a present tense would quietly become something else.
Check what kind of word you're holding. An Ancient Word whose meaning is lost is working on its magnetism and its value, so accuracy of pronunciation is everything and understanding is optional. A constructed word is doing the same job by design. Either way, the thing to get right is the sound, not the sense.
And the standing caution about names applies whenever one appears. There are many entities and not all of them are good, so choosing an address is a decision rather than a formality.
The tense rule, the two-kinds division and the account of Ancient Words are asserted with no source named or quoted. This is the Eldest Tradition warrant on the source stub. 🚩 SINGLE SOURCE.
The tense rule is stated as a property of the matrix and no example is given — no incantation is shown in a wrong tense, and no failure is described. ⚠ The claim that Ancient Words work despite lost meanings sits against the elsewhere-stated effort of Academic Wizards to recover those meanings. Both are reported; neither is qualified.
Unresolved: "arcane non-descript vocabulary" is grouped with Actions under Magic Words, but non-descript syllables are not verbs and cannot carry tense. What the rule means for them is not addressed.
Follow the tense rule and magic is strictly about now. Present-tense verbs are fixed to the continuum and manifest without question, doubt or delay; anything aimed at a future gets lost because it isn't affixed to anything yet. Follow the rest of the curriculum and a great deal of it is aimed forward. Divination's predictions work with the unformed world of the future. Alteration's transfigurations change impending events so the result differs from what was expected. Protective incantations guard against things that have not happened.
Those are not obviously compatible. A spell that alters an impending event is doing something about the future, and the tense rule says the future cannot be addressed. The likely reconciliation is that the operation happens now on something that presently exists in Formation — but nothing says so, and a practitioner reading both would have to construct that themselves.
Astra Mantras — Hūṃ Phaṭ — Both traditions arrive at utterances whose meaning is gone and whose power isn't, and both are comfortable with that. The Ancient Words here are so old that their original meanings have been lost while still carrying a magical magnetism sufficient to change reality. The Sanskrit seed-syllables were never carrying propositional meaning to begin with.
The difference is what each tradition thinks was lost. This system treats the loss as real and incidental — meaning went, value and magnetism stayed, and Academic Wizards go on trying to recover the meaning as scholarship. The mantra tradition has nothing to recover, because there was never a sentence underneath.
Which means only one of the two has to explain why its central instrument still works after the explanation for it went missing — and the explanation offered, that a word is a number is a code, is exactly the kind that survives the loss of meaning. A tradition whose words run on values rather than on sense is a tradition that can afford to forget, and this one has built that affordance in deliberately.
Sharpest implication. The tense rule is an addressing rule, not a stylistic one. Actions exist as constructs in the ever-present manifestation of time and space, so a present-tense verb has somewhere to attach and a past or future one does not — which makes a wrongly-tensed spell not weak but unlanded.
Generative questions.