Crystallization Lesson Eight · the Three-Way Demonstrative Wall · the "Done"-Face Sound-Change Master Chart · Filing the False Friend ภูต

One — Draw It Out (7 minutes) — blanks before the chart

Draw a long row of blanks on the board, no chart name yet.

"This past half-month you split 'that' into two layers and gave the verb a 'done' face. Shout out what you already know.
'Who is this (at hand)?'" (kaḥ ayam) "'That mountain (far off)'?" (asāu parvataḥ)
"'He has already awakened'?" (buddhaḥ) "'The suffering has already passed'?" (gataṃ duḥkham) "'He went (active voice)'?" (gatavān)
"'Ghost!' — the word a student shouted?" (bhūtam) "What did the teacher correct it to, for the real word for 'ghost'?" (pretaḥ)

(A dozen-plus blanks light up in quick succession.)

"See that? You know the three-way near/far split, you can recognize the 'done' face, you can even build the active-voice signature form, and you've even exposed a false friend.
Today we do three things: **put the three-way demonstrative pronouns (with the dual) up on the wall, collect the 'done' face's shapeshifting rules into one master chart, and formally close the case file on ภูต, the false friend.
What's left isn't new material — it's assembling two lessons' worth of parts into one full picture.**"

Two — Naming One: the Three-Way Demonstrative Pronoun Wall (9 minutes) — the dual finally completed today

"On Crystallization Lesson Six's pronoun wall, you hung up 'I mad／you tvad／he tad.' P27 added two more rows: the 'this' at hand अयम् and the 'that' far off असौ. Today we complete these two rows, including the dual, and the wall becomes three layers deep — near—general—far."

Three-way pronouns, side by side (seeing the whole wall in one line · nominative singular):

The proximal अयम् full chart (masculine, singular/dual/plural; ★ = derivable from the तद् family by dropping t-; odd = its own special set):

• Already lit up: students filled in the masculine singular and plural columns' nom/acc/instr/gen/loc back in P27; the bolded dual column + the dative/ablative rows are today's only new material — and the dual is again the most economical: आभ्याम् covers instr·dat·abl in one word, अनयोः covers gen·loc in one (the same collapsing pattern as Crystallization Lesson Six's "we two" āvābhyām/āvayoḥ).
• Memorize most of the chart in one line: except for nominative/accusative, अयम् ≈ the तद् family minus its initial t- — tasya→asya, tasmin→asmin, teṣām→eṣām, teṣu→eṣu, tasmāi→asmāi. Know तद् and you know most of अयम्. (Just get used to four quirks by ear: instrumental अनेन／अनया adds an- extra, the dual genitive/locative अनयोः, plural instrumental एभिः [not \*ऐः].)
• Neuter nom/acc इदम्／इमे／इमानि; feminine nom इयम्／acc इमाम्／gen अस्याः／loc अस्याम् (following सा, minus t-) — everything else wears the same masculine suit. All singular nom/acc forms end in -am (अयम्／इदम्／इयम्; इमम्／इदम्／इमाम्) — they look like accusatives, so be careful to tell nominative from accusative.

The distal असौ chart (reference-only type · recognize, don't memorize, per Ruppel's explicit "low frequency" note):

• Already lit up: the whole chart was covered for recognition in P27 (nominative असौ／accusative अमुम्, with अमु／अमी hidden in the stem). The dual अमू／अमूभ्याम्／अमुयोः is presented together today, following the same "three hats collapse into two words" rule. The distal is rarely used anyway — recognition is enough: seeing अमु／अमी buried in a stem while reading and recognizing 'oh, that's the far-off one' is sufficient.

Three — Naming Two: the "Done"-Face Sound-Change Master Chart (16 minutes) — collecting the whole shapeshifting rulebook

"P27 only showed you five 'done' faces (बुद्ध／मुक्त／दृष्ट／हत／गत), and P28 demonstrated a few more, plus 'when it's hard to pronounce, pad with i.' Back then I said, 'seven types of shapeshifting rules, all collected on the wall at the closing crystallization lesson' — today is that day. One chart, the verb's whole set of 'done'-face transformations."

The "done"-face sound-change master chart (-ta participle, eight shapeshift types; every paradigm word paired with a Thai fossil)

The "done" face's -na branch (a minority of roots attach -na instead of -ta · four sub-types · also each paired with a Thai fossil):

"One sentence reads the whole chart: the verb grows its 'done' face by weakening the root and attaching ta (or, for a minority, na); when the weakened root's tail collides with t, it produces eight kinds of shapeshifting — but the shared method is just one line: weaken the root first, then attach the label."

• Already lit up: types ①②③④⑦⑧ (six of them) were demonstrated in P27/P28 (buddha's sandhi, mukta/yukta's collapse to k, dṛṣṭa's retroflexion, gata/hata's dropped nasal, pūjita's padded i); type ⑤ (h's three types) and the full ⑥ (ā→i), plus the -na branch's four sub-types, are the explicit promise "left for the reference appendix at the closing crystallization lesson," delivered on the wall today.
• Thai carves every single shapeshift into an everyday word for you: aside from spots deliberately left blank, every cell has a Thai fossil — บูรณะ (restore ← pūrṇa "complete"), ภิน (broken ← bhinna), ภัคน์ (snapped ← bhagna), มลาน (withered ← mlāna), หีน (inferior ← hīna, the same หีน as in หีนยาน) — even this obscure -na branch has an entire set borrowed by Thai. Every paradigm word is a living word you can check by yourself, not an abstract chart.
• Recite the two old machines' mnemonic once more (established in P27/P28 · reviewed side by side today): a root whose action lands on someone else → "the one that has been [done to]" (the person doing the deed wears the instrument hat, recycled from P10); a root whose action only concerns itself → "already [done]" (gata = "gone," not "been gone"). The scholarly name the textbook gives this form can mislead you — "gone" isn't really "passive," and it doesn't necessarily even mean past tense (Goldman's own point; the scholarly name is teacher-note material only).

Four — Naming Three: Merging the Signature-of-One's-Own-Hand -tavant + Putting the "Done" Face's Three Uses on the Wall (8 minutes)

"P28's second machine, the 'signature of one's own hand': attach the possessive tail -vant to the -ta label, and it flips from 'the thing was done' into 'he got the thing done' (active past). You've already seen this -vant hat back in P24 — it's exactly the set worn by the honorific bhagavant. Today we formally file uktavān into P24's hat cabinet: one hat, shared by the honorific and 'he did it.'"

The signature-of-one's-own-hand -tavant declension (following P24's bhagavant · swap the head, keep the hat):

• Already lit up: the whole hat was covered in P24 (chest-out -vānt-/tuck-in -vat-/at-the-door -vān/feminine -vatī, all in the bhagavant row of the panorama); today we only fit uktavān's new head onto it — chest-out uktavant-, tuck-in uktavat-, feminine uktavatī following nadī — not one cell newly created.
• One-line formula: any -ta "done" face + vant — gata→gatavān (he went), dṛṣṭa→dṛṣṭavān (he saw), ukta→uktavān (he said); both "action landing on someone else" and "action concerning only itself" roots can be signed this way (established in P28).

The "done" face's three uses go on the wall (first established in P27, settled here today):

①as an adjective modifying a noun (agreeing in case, number, gender, the hat following the modified noun); ②used independently as a nominalization (datta "the thing given," likhita "document" — ลิขิต is exactly this); ③standing in for a finite verb as the predicate — P27's story sentence ๔, "buddho 'yam, gataṃ duḥkham," and P28's sentence ๒, "buddhaḥ pūjitaḥ," both rely entirely on the "done" face to carry the sentence, with not a single finite verb. In reading, "the 'done' face as predicate, with no finite verb" is the norm — this recognition formally goes on the wall today.

Five — Review Column (5 minutes) — Filing the False Friend ภูต + Same-Root Twins + Decoder Wrap-Up, No New Rules This Lesson

Filing the false friend ภูต (featured in P28 · closing the case today):

ภูต ← bhūta is the signature false friend of this past half-month. Thai ภูต has narrowed to mean "ghost," but Sanskrit bhūta is √bhū's ("to become") "done" face — meaning "that which has already come into being / that which exists" (i.e., all beings, all that is, as in pañca-bhūta, "the five elements"). The real word for "ghost" is a different word entirely: เปรต ← preta (pra + √i, "one who has already departed," the deceased).
One chart closes the whole case — the same root √bhū, one family, one same kind of fossil, three different fates:

"Same origin does not guarantee same meaning: bhagavat kept its honor, bhūta drifted into "ghost," preta really is a ghost — a living specimen of a single lesson's worth of 'same-root, three fates.' When you see bhūta in a Sanskrit class, its primary sense is always 'that which exists' — don't slot in the Thai meaning. That line in the story, tvam api bhūtaḥ ('you too are a bhūta'), means 'you too are a being that exists' — not calling you a ghost."

Filing the same-root twins -ta ↔ -ti (planted in P27 · reviewed side by side today):

The "done" face -ta and the abstract noun -ti are twins from the same root — the same root, the same internal sandhi, differing only in the tail. Thai often borrows both twins:

Guarding against confusion: มุกดา ← muktā "pearl" (a feminine noun, extended from "that which has been released from its shell") is not the participle mukta; ทฤษฎี ← dṛṣṭi "theory" is the -ti abstract noun, not the dṛṣṭa participle — same root, different tail, a perfect demonstration of the twins.

Decoder review (no new claim this lesson, the rule pool closes here):

• D1, dropping the final -a (from the amortization schedule, L00) × D5, adding a final ◌ะ to show the tail (from the amortization schedule, P23): the "done" label lands in Thai in exactly this pair — หัต←hata (D1 drops the tail)／หตะ←hata (D5 shows the tail) — the same word, two spellings, reviewed side by side.
• B1, ṛ→ฤ (L00) + retroflexion: ทิฏฐะ←dṛṣṭa; C3, t→ด (P15): หัต←hata; E5, Pali-Sanskrit doublets (P10): มุกฺต keeps the classical consonant cluster／มุตตะ assimilates kt→tt via the Pali path — all old cards, recycled here only for word-formation review.

"These are all old rules already in hand, swept through side by side today — a crystallization lesson doesn't add new rules; the rule pool closes here (per the ruling of Crystallization Lessons Six and Seven)."

Six — Cognate Production + Second Wave (8 minutes)

• Cognate production: everyone draws a "done"-face card (-ta or -na, either one) and a recycled verb from their kośa, and on the spot (a) states "root + passive or active perfect" and identifies the Thai fossil, (b) makes a sentence with "the 'done' face as predicate, no finite verb," (c) then converts it into the -tavant signature-of-one's-own-hand version.

Sample: ṛṣiḥ buddhaḥ (the sage has awakened) → ṛṣir gatavān (the sage went · active) ／dvāraṃ bhinnam (the door was broken · -na branch) → śatrur dvāraṃ bhinnavān (the enemy broke the door). Teacher recasts, no interruptions.

• Second wave (Assimil method): retell P28's "the ghost at the temple gate" story using Thai prompts, requiring the line the student shouted as bhūtam to be reperformed using असौ ("Is that far-off thing over there a preta?" asāu pretaḥ kim) + the "done" face as predicate (sarvaṃ jīvitaṃ bhūtam), then have the whole class close it out with a -tavant active-voice sentence ("the teacher said it," guruḥ uktavān). Half a month's worth of CI input, and today it's the story's turn to shapeshift and speak.
• Closing preview: "The three-way demonstrative pronouns are all up on the wall, the 'done' face's shapeshifting is collected into a chart, the signature-of-one's-own-hand is merged into its hat — the map of noun declension and participle recognition is now complete. The next two lessons bring the participle's remaining relatives: the absolutive (after having done X..., -tvā/-ya) (P29), the infinitive and the 'to-be-done' face (to go do..., that which ought to be done, -tum/-tavya) (P30) — the intuition you've built up, 'weaken the root, attach the label,' will work just as well on these non-finite verb forms. The 'done'-face sound-change master chart stays on the wall — check it any time you need to."

Chart cards ×5: the three-way demonstrative-pronoun wall card (near ayam／general saḥ／far asāu, three rows × three genders; ayam's full masculine singular/dual/plural chart + the "except nom/acc, ≈ तद् minus t-" shortcut + asāu's reference-only side panel; the dual column highlighted), the "done"-face sound-change master chart card (-ta's eight shapeshift types × each paradigm word's Thai fossil + the -na branch's four sub-types; the mnemonic "weaken the root, attach the label"; the two-way split between "the one that has been [done to]"/"already [done]"), the signature-of-one's-own-hand -tavant card (-ta + -vant = active past uktavān; declension follows P24's bhagavant, chest-out and tuck-in, connecting to P24/P28), the false-friend ภูต filing card (bhagavat keeps its honor／bhūta narrows to "ghost"／preta the genuine ghost — three fates of the same √bhū; myth-busting against muktā "pearl"·dṛṣṭi "theory"), the same-root twins -ta/-ti card (gata/gati・mukta/mukti・śānta/śānti・dṛṣṭa/dṛṣṭi side by side, Thai often borrows both). (No new Decoder card this lesson; D1／D5 stay on their old L00／P23 cards, B1／C3／E5 stay on their old cards, reviewed side by side only.)