The last essay modelled diet as a simple optimisation problem: minimise harm, subject to the body's nutritional needs. A few thoughtful readers wrote back, and their questions were too good to leave unanswered. Some asked about real exceptions the model might be missing — harsh climates, the way modern life has changed how we eat. One reader pushed harder, on the premise itself rather than the conclusion: is harm-minimisation even the right thing to aim for, given that the world can look very much like a jungle? It is a fair question, asked in good faith, and this essay is really just the first one continued — filling in what space did not allow the first time.
The jungle verse was a starting point, not a free pass
Nothing in the original model said a person should be unable to use force. The objective \(\min \sum h_i x_i\) is about what we eat. It says nothing about self-defence or about the strength needed to not be someone's prey. Those questions belong to a different, bigger problem: how a person or a nation survives among others who may wish it harm. The two problems get mixed up easily, but they are not the same one. The śāstra itself keeps them separate. A kṣatriya's duty includes using force to protect the innocent. That is not a break from ahiṃsā. It is ahiṃsā applied at a harder edge, where doing nothing causes more harm than acting. This is why the Bhagavad-gītā is spoken to a warrior on a battlefield, not to a monk in a forest. None of this tells us what an ordinary person, with no battlefield to defend, should eat for dinner.
What “learn from Krṣṇa” really means
The reader's instinct here is actually a good one, and worth sitting with rather than waving away: if the jungle is real, look to the figure in the tradition who knew how to handle it without losing himself, and learn from him. Krṣṇa is exactly the right teacher for that question. He did not always play the gentle role at Kurukṣetra, and strength, not softness, is part of what let dharma win. The only refinement worth adding is to learn from his whole life, not just the eighteen days that are easiest to quote.
Before a single arrow was fired, Krṣṇa went in person as a peace messenger to the Kaurava court. He did not ask for the kingdom the Pāṇḍavas were owed. He asked for five villages. Just five. Duryodhana insulted him openly in that court, and he did not retaliate. Vidura had warned for years that this war would be costly. Krṣṇa's own visit was the last serious attempt to avoid it. The war began only after the other side closed every cheaper way out, on purpose. This is the part most people skip when they quote Krṣṇa's cunning. It is not a small detail. It is most of what he actually did in the story. He did not abandon harm-minimisation for clever strategy. He tried harm-minimisation first, in public, even at the cost of his own pride.
Only after every peaceful option had failed did the strategist in Krṣṇa appear: hiding Arjuna's identity to draw out Karna's armour, the plan that ended Jayadratha before a false sunset, the moves that led to the fall of Bhīṣma and Droṇa. Each of these shortened a war that, by that point, could no longer be avoided. None of them started the war. And the story does not end with Duryodhana's death. After the war, Krṣṇa took nothing for himself or for his own kingdom of Dvārakā. He placed Yudhiṣṣhira on the throne and stepped back. When Aśvatthāmā answered defeat by killing the Pāṇḍava children as they slept, Krṣṇa's response was justice, not revenge. The Brahmāstra was neutralised, and the man was shamed and marked for life, but not met with the same horror in return. So the full pattern is: try peace first, use the smallest necessary cunning once peace fails, and show restraint after winning. Every part of that pattern aims at the same thing the original model aims at — less harm overall, counting the harm of letting wrong go unchecked. Picking out one clever trick from this pattern and calling it “how Krṣṇa fought” is not learning from him. It is reading one chapter of a much longer book.
What we eat shapes the mind that makes these choices
There is one more thing worth adding to this. The śāstra's point about food is not only that meat causes more harm than grain or fruit. It is that the guṇa, or quality, of our food shapes the mind that does the choosing. Food in the modes of passion and ignorance — what the texts call rājasic and tāmasic food — is linked, in the tradition and in a fair amount of modern research on diet and mood, to exactly the traits that build a jungle: aggression, ego, the wish to dominate others. Most wars trace back to attachment to body, nation, and the greed for power. A way of eating that calms those traits is not beside the point of strength. It comes before it. The jungle is not only a fact we must accept. It is, in part, something we build through what we eat.
A second, gentler line of questions followed: what about people who simply have no choice in the matter, and what about how differently most of us live today compared to even a hundred years ago? Both are worth sitting with carefully.
The real exceptions, and how narrow they are
Time, place, and circumstance do change what is possible, and the śāstra has always made room for this. A people living on Arctic ice, or in true desert, where the land will not grow what the body needs, cannot meet that need from plants alone. For them the constraint is real. Much of the meat-eating and animal-sacrifice found across human history is best understood as a sensible answer to that constraint, not as a rule meant for all time. The exception is real. But for most people reading this — people with grain, lentils, and dairy within easy reach — this is simply not the constraint they live under.
What modern convenience has hidden from us
For almost all of human history, eating meat meant that a person or their family did the killing. The cost was seen, at least by whoever ate. Today the whole chain — growing the crop, raising and killing the animal — is done by someone we never see, and it all arrives on the same shelf, asking the same effort from us: none. This has done two things. It has dulled a feeling earlier generations could not avoid having. And it has allowed killing to grow to a size no old text ever imagined. The modern slaughterhouse is mechanised, constant, and built to feed entire cities. Nothing like it exists anywhere in the old texts now used to defend it. If we are going to argue from ancient tradition, we owe that tradition honesty about what the ancients actually had the means to do.
What the scale actually costs
And this is not only a cost to the animal. Meat and dairy give the world just 18% of its calories and 37% of its protein, yet they use 83% of all farmland and cause roughly 60% of agriculture's greenhouse gas emissions. This comes from the largest study of its kind, covering 38,700 farms in 119 countries.1 Livestock alone use 70% of all agricultural land and 30% of the planet's land surface, and feed crops take up another third of all farmland besides.2 Grazing for livestock causes nearly 40% of forest loss worldwide, and in South America it causes almost three-quarters of deforestation; about 70% of cleared Amazon forest is now pasture.2 One kilogram of beef costs about 15,415 litres of water, against 300 litres for vegetables — a fifty-fold gap, mostly because so much of an animal's feed is itself grown on irrigated land, one wasteful step before it reaches the plate.3 This is the part of the harm we rarely talk about. Even setting aside what we owe the animal, the resources spent to route food through an animal rarely return their worth, and at the scale of today's meat industry, that waste becomes a planetary problem, not just a personal choice.
What even permitted killing asks for
It is worth being honest that not every tradition close to the Vedas forbids killing outright. Śākta worship of the Goddess, in forms such as Kālī, has historically included animal sacrifice. But look at how it is done, not just that it is done. The animal is offered. The offering is made sacred. Only then is prasāda — a blessed remainder — eaten, with full awareness that a life was given in worship, not for taste or convenience. Modern meat-eating has none of that structure: no offering, no act of making it sacred, only appetite. So even the one tradition here that allows killing does not excuse how most people eat meat today. If anything, it sets a higher standard, not a lower one.
Putting it together
The jungle verse describes a cost that life always carries. It does not excuse us from trying to lower that cost. Krṣṇa's full conduct — peace tried first, strategy used only once peace failed, restraint shown after victory — is harm-minimisation done well under the hardest conditions, not proof against it. The real exceptions for harsh climates are genuine, but narrow, and most people reading this do not live inside them. What modern convenience has taken from us is not the harm itself, only our awareness of it, and it has let that harm grow to a size the numbers now make plain. What is left, once every honest exception is set aside, is close to where the Īśopaniṣad began: take what is set aside for you, and do not be greedy for more. That was never a soft instruction. It is, if anything, the harder one.
1. J. Poore & T. Nemecek, “Reducing food’s environmental impacts through
producers and consumers,” Science, 2018.
2. UN FAO, Livestock’s Long Shadow and related FAO land-use assessments.
3. M. M. Mekonnen & A. Y. Hoekstra, “A Global Assessment of the Water Footprint of
Farm Animal Products,” Ecosystems, 2012.