Rohan Pandey Profile picture
May 24, 2024 16 tweets 6 min read Read on X
Sacred fire for Vedic ritual is chiefly produced by Agnimanthana (fire-churning), outlined in the Śatapatha Brāhmaṇa.

But one specific chip of wood it requires has puzzled scholars for the last 800+ years.

Here's how I solved it with some wilderness survival sleuthing 🧵⬇️
At the center of Vedic Hinduism lies yajña, the fire sacrifice.

Correct performance of a yajña requires strict adherence to instructions provided in the Saṃhitā & Brāhmaṇa texts of the Veda, composed over 3000 years ago.

And the fire used in yajña must be of sacred origin. Image
Traditionally, a sacred fire would be kept by most men and passed from teacher to student or father to son, blazing on across the centuries.

The Zoroastrians still maintain the eternal flame; their temples bear fires originally lit perhaps 2500 years ago. Image
*Bearing* of the fire is also India's namesake, the Bhārata clan exalted in the Veda having been named for ardently bearing the sacred fire.

But when it is extinguished, how does one kindle a sacred fire again? Image
Luckily, the Brāhmaṇas provide us fairly detailed instructions for this process, the Agnimanthana, or churning of fire.

We must place: a wood chip (śakala), two sprouts (darbha-tarunaka), a lower churning stick, and an upper churning stick. Then churn until lit. Simple, right? Image
Here's what the common orthodox interpretation would look like. The śakala is quite far from the locus of ignition, so how could it be Agni's janitram (birthplace) as the text says?

And in practice, the chip destabilizes the lower stick, making churning difficult. Image
To address the latter concern and bring the chip closer to the locus of ignition, variant configurations have been proposed that place the chip on top of the lower churning stick or even fixed into the upper stick.

However, these interpretations bend the text considerably. Image
During the discourse between Ranade & Kashikar, they note that even the renowned Vedic scholar Sāyaṇa (1300s AD) appears confused when interpreting the Agnimanthana.

How could we have forgotten the fundamental Vedic rite of fire creation, perhaps over a millennium ago?
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Last December, I performed a Śālākarma (housewarming rite according to the Pāraskara Gṛhyasūtra) at my father's new house and in the process experimented with Vedic fire creation.

I realized that the current forms of Agnimanthana instruments we have are extremely suboptimal. Image
Struggling to deal with the lower araṇi's instability due to the wood chip, lack of oxygenation at the ignition locus, etc., I turned to wilderness survival videos about starting fires with a "hand drill".

And the moment I saw this, everything clicked. Image
The issue wasn't the śakala, but rather the adharāraṇi (lower churning stick)! We've been making them too thick for at least the last thousand years.

The uttarāraṇi (upper stick) must penetrate through and directly contact the śakala—that's why it's called Agni's birthplace! Image
It gets better. After churning, bushcraft-man tells us that the śakala (having collected the young embers) often adheres to the adharāraṇi and must be carefully pried separate with a twig.

I posit that anti-adhesion was the original functional purpose of the darbha-taruṇaka. Image
Ok, so why do these arcane specifics of Vedic ritual matter?
1. Understanding Vedic ritual symbolism enables understanding Vedic metaphysics
2. Suggests that traditionally received Vedic interpretations could be flawed
3. Cool to know I'm doing it the way they did >3000 years ago
The last 1000 years of fire have been non-Vedic. What other components of Hindu tradition today are similarly flawed, misunderstanding or simply having forgotten our foundational literature?

I argue the Veda is closer to e/acc than contemporary Hinduism:
rohanpandey.substack.com/p/thermodynami…
On June 21 in San Francisco, I will kindle the sacred fire by Vedic means. On the day of the solstice & the night of the full moon, Agni will be born after a millennium-long slumber.

If you are interested in joining for this Agnimanthana and subsequent Yajña, please DM me.
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More from @khoomeik

Jan 22
Deciphering the Indus Valley script would revolutionize our understanding of Indian history. Recently, @yajnadevam's Sanskrit hypothesis has gained steam & many asked me: is it legit?

So I spent the last couple hours analyzing his decipherment with o3, and here's what I found 🧵 Image
For background, his scheme is a straightforward mapping from IVC symbols to Sanskrit sounds, but note that it ignores:
- aspiration (k vs kh)
- retroflection (त vs ट)
- sibilant place of articulation (स vs श vs ष)

These differences are critical in Sanskrit (especially Vedic). Image
But let's ignore that and look at some translations. Those familiar with Sanskrit upon reading these will note 2 things:
1) Many words are rare, awkward synonyms (let's ignore this issue too)
2) It doesn't "sound" like Sanskrit, despite seeming so to the unfamiliar ear Image
Read 11 tweets
Jan 13
The Indus Valley seals' most common motif—the unicorn—is always found flanked by a mysterious object that has drawn far less scholarship.

What is this lamp-looking item? And can Vedic literature tell us anything about the Indus Valley Civilization's supposedly lost religion? 🧵 Image
First, some context: academic consensus has traditionally been that the IVC had *no* continuity with subsequent Indian civilization: they flourished, collapsed, and civilization restarted once the Aryans arrived.

This view is crumbling in light of recent archaeological evidence. Image
Image
There is now a direct line of cultural continuity from Harappan civilization, through the Cemetery H culture, into the Painted Grey Ware culture—broadly accepted to represent the Vedic Kuru Kingdom.

So some content in the Veda quite likely descends from the IVC. Image
Read 12 tweets
May 28, 2024
📢 Excited to finally be releasing my NeurIPS 2024 submission!

Is Chinchilla universal? No! We find that:
1. language model scaling laws depend on data complexity
2. gzip effectively predicts scaling properties from training data

As compressibility 📉, data preference 📈.
🧵⬇️
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Chinchilla claims their 1-to-1 parameter-data scaling law is agnostic to the type of textual training data used 🤨

But @ArmenAgha @AIatMeta find code-gen scaling prefers parameters 😳

@deepseek_ai team further noticed that scaling with cleaner data also prefers parameters 🤔

Image
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How could we control data complexity to explore data-dependent scaling properties?

We modulate the syntactic🌳 properties of Probabilistic Context-free Grammars (PCFGs) to generate 6 synthetic datasets.

Their gzip-compressibility is a good proxy for their syntactic complexity✅ Image
Read 10 tweets
Nov 11, 2023
Introducing Tarsier 🙈, an open source Python library to enable web interaction with multi-modal LLMs like GPT4! Here’s a demo of a Tarsier agent navigating through google to watch the OpenAI Dev day announcement:
Tarsier provides two fundamental utilities:
1. ability to tag interactable elements with a unique id.
This allows LLMs to better understand what the elements they can take actions upon are, and this also provides a mapping back from the LLMs choice to the underlying element. Image
2. ability to parse a screenshot into a spatially aware OCR text representation.
In doing this, we’re able to even use GPT4 *without vision* (or any other text-only LLM) for web tasks. Image
Read 5 tweets

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