WEAPONS INFORM MOVEMENT

In a prior article, I explained ikkyo and irimi-nage arise from the moment of contested weapon access—the effort to draw and the counter-effort to suppress. The last Saturday weapons class continued that line of thought, focusing more precisely on ikkyo and nikkyo as a means to draw the katana in a contested encounter.

Protecting the katana from an opponent directly informs empty hand techniques. In short, technique is tactical.

I repeat, with some additional observations, my previous explanation:

Ai-hanmi katate dori ikkyo ushiro tenkan

The encounter starts because uke attempts to grasp nage’s weapon that is held by the obi (belt) on the left hip. (Because warriors are right handed, this is a RvR encounter, but train both sides for bi-lateral development.)

In response, nage withdraws the weapon handle, thereby removing it from uke’s grab by turning the left hip while using the left hand to pull the saya vertical and tight to the ribs, and making a small step ushiro tenkan. Uke then orients to take nage’s right hand – the only viable target once the handle is out of reach.

Nage cams their grabbed arm – elbow down, shyuto rotating inward – which defines the axis of the encounter where uke’s need to keep contact (lest nage immediately deploy the weapon). Nage’s shoulders must be soft and allow uke the illusion of a possible pin of the sword-drawing arm to nage’s chest. Nage must keep the armpits closed; do not try to keep uke away: invite the attack. At the apex of the turn nage’s grabbed arm will touch their opposite shoulder. From this point nage extends their fingers along the vertical line – absorbing uke’s pressure without contesting it. This will ensure uke’s elbow is moving vertically upward while their balance is being drawn forward. Keeping the grabbed hand as a static point, nage can use their left hand to control uke’s elbow and execute a controlling cut through uke’s center (direct attack to the head – shomen).

This narrative could be expanded to describe nage using their left hand to feed the saya up so as to place the handle into their right hand, which would allow (with a drop of nage’s hip) drawing the weapon and use it as an inducement for uke to move (as the blade rests against the back of uke’s neck).

But the further refinement is to understand what Okamoto sensei calls the “invitation” – nage must not move faster than uke. Uke must remain “interested” in the original intent: grabbing the sword (or the secondary target, nage’s hand). The difference I am explicating is one of timing. This is the ai-ki, the blending of timing and intent.

While the gross rusticity of the movement is to first prevent an opponent from taking your weapon, and secondarily drawing it even when the opponent has some physical control over a portion of your body, ikkyo ultimately is a lead and a capture. Once the movement is mastered and the practical use of the technique is understood, the next level is to find the connection in action.

Ai-hanmi katate dori nikkyo – direct

In the continuation of this exploration, nikkyo is no longer a simple wrist lock, but a derivative of a contested draw.

Where ikkyo starts with nage tactically removing the handle from uke’s grasp, nikkyo starts with nage drawing. Uke protectively arrests nage’s drawing hand (stop hit), uke forcefully intercepts the right hand at the moment nage has grasped the handle to draw.

At this moment, the technique is simply to use the handle as the short end (load) of a lever, where the grabbed wrist is the fulcrum and the back of the saya is used to deliver the effort – a first order lever. The mistake most students make is to forget that the sword is the tool, meaning students try to push the handle forcefully through uke’s wrist, forgetting the mechanical advantage of the handle (not their hand) as the load moving end of the lever. We get trapped by thinking the grabbed hand does the work. Once we understand that the encounter created an opportunity to use a lever, the crushing effect of nikkyo manifests.

Of course the subtle integration of the entire body must follow the gross mechanical advantage. Nage will employ a small withdraw, circle of the handle to gain positional superiority (above) uke’s wrist, and then turn his hip back so the handle points directly at uke’s center. Once properly aligned, nage must lift the saya up (dropping the handle down) and simultaneously shift his weight down and through the right thigh.

Once we understand precisely how the sword while in the saya creates mechanical advantage, we can extrapolate back to the empty-hand encounter. The shyuto of the grabbed hand is the handle and nage’s forearm is the saya. Consider the empty hand encounter where uke grabs nage’s wrist – in response, nage pronates his elbow inward toward the centerline, which then orients the shyuto vertical and above uke’s wrist. To do so, nage must move around the fixed point in space defined at the moment uke grabbed him because that point is the fulcrum.

Nage’s shyuto – is strengthened by spreading the fingers (expanding the space among the metacarpals) and then is levered over uke’s wrist when nage aligns his body around the fulcrum. With the right hand fixed as a pivot, nage’s left hand reaches across to reinforce, trapping uke’s hand to prevent uke from escaping the fulcrum. From here, nage drops diagonally backward and down, drawing uke slightly forward in a motion they cannot resist without losing their center. The purpose is not pain. The purpose is to freeze uke’s control over the draw and replace it with your own structure.

The structure of the wrist joint is the target, but it is a time interval that nikkyo truly captures. Uke’s attempt to control becomes their undoing.

Nikkyo is weapon retention by interruption. Where ikkyo removes the weapon from danger and leads uke’s energy forward and up to culminate with a draw and cut, nikkyo stops the attempt midstream and shatters the path of control with a trap. From the trap the draw can be completed with uke still on the arm.

It is important to understand then that nikkyo does not exist in isolation: like all Aikido techniques, it is contextual. Nikkyo can only occur when uke has latched on and is attempting to control the drawing hand. And it only works if uke remains interested in that control.

This is where Okamoto Sensei’s concept of “invitation” returns with new clarity. Nage must not move faster than uke. If uke loses interest in the draw, or shifts intent, nikkyo will not arise. The blend—the ai-ki—is in keeping uke’s attention on the hand that no longer holds the weapon, while their own spine becomes vulnerable to destabilization.

This requires not superior timing, but rather equal timing—interlocked timing (ki-musubi)—and from this interlock, structural advantage is extracted.

Once this functional origin is understood, nikkyo can be seen as a tactical necessity. In close quarters, it is the method by which the opponent is frozen long enough to reclaim your weapon—or to complete the draw with safety and control.

The ultimate training refinement is not in the pressure applied to uke’s wrist, but in the clarity of timing and the exactness of axis control—not suppressing uke’s action, but letting it complete itself on your terms.

Once the movement is mastered and the tactical value of the technique is understood, the next level is to find the connection in action.

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Additional technical considerations for nikkyo:

Review how the handle can be grasped as a lever-lock like any tessen or kobutan.

An excellent visual and historical aid to study for deeper understanding:

Old Magic – Exposure

“Similia similibus curentur.”
Let like be cured by like.

— Hippocrates (attrib.), echoed by Paracelsus and Galen

This principle, later adopted by homeopaths and ridiculed by modern medicine, remains as stubbornly persistent—and surprisingly insightful—as any ancient folk wisdom. You’ll find it not only in medical aphorism but also in the logic of sympathetic magic, as described by James Frazer in The Golden Bough: the belief that a small token of the harmful thing itself, properly administered, holds the key to healing (or beating the electric chair).

Pliny the Elder advised rubbing the ashes of a scorpion’s head into a scorpion sting. Ancient warriors smeared bits of rust from a cursed blade into their wounds to “pull out the evil.” The practice remains in common parlance after a hard night of drinking – the origin of “hair of the dog” is a contraction of:“Take a little hair of the dog that bit you.”

Perhaps we should not readily dismiss the idea, which as new scientific grounding, thanks to a series of elegant studies by Carole Ober and colleagues. In a 2016 New England Journal of Medicine article, further developed in a 2017 review in Current Opinion in Immunology (PMID: 28843541), Ober showed that children raised in traditional Amish farming environments exhibit dramatically lower rates of asthma and allergies, not because of their genetics, but because of their proximity to barns, animals, and microbial richness. Amish houses are full of what the modern world tries to eliminate: dust, dander, endotoxins. Early exposure to these allergens stimulates innate immunity because the exposures are mild, daily, and nonlethal. The immune system is not overwhelmed, it is trained.

This maps directly to what I described in my article Pain as a Teacher: the principle that adversity, in measured form, builds capacity, calibrates response, and teaches discernment. A student who has never been hit flinches at every feint. A child never scratched by the world develops allergies to life itself. Biological snowflakes.

We learn through discomfort and become more capable through experiencing it. A protected immune system, like an overparented child or a poorly trained fighter, becomes reactive, oversensitive, and prone to catastrophic overreach.

Frazer divided sympathetic magic into two laws: contagion (things that have been in contact remain connected), and similarity (like affects like). Both are at play in Ober’s study. Contagion: Amish children are constantly exposed to barn dust; particulate microbial DNA, animal hair, feed particles. Their bodies internalize the environment. Similarity: Their immune systems are challenged by irritants that resemble pathogens but do not overwhelm. Like trains like.

What is immune training if not the biochemical form of sympathetic magic? I use a similar logic in my classes when I provide demonstrations of bunkai and a staccato rhythm that punctuate demonstrations of ki-no-nagare. Expose the child to dust, and the body learns not to overreact to pollen. Strike the student gently, and he learns to defend against a real blow.

We laugh at the ancients for believing in healing relics and ritual bloodletting, yet it informed our modern immunology. We inject children with diluted toxins in a controlled modern ritual. We haven’t abandoned the logic. We’ve only changed the priesthood. This is not just a medical insight. It is a moral one. In every domain, education, parenting, politics, personal growth, we face the temptation to sanitize and protect. But the lesson from Ober’s research and from martial training is the same: overprotection breeds fragility. Controlled adversity breeds resilience.

Just as dust can inoculate, so too can pain, difficulty, and fear become allies in our moral and physical development. We do not conquer them by avoidance. We master them by exposure.

Ex malo bonum “From evil, good”[1]

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[1] Of course there is a footnote and a play on an old disagreement.

Seneca the Younger’s gave us the original dictum (from Epistulae Morales ad Lucilium 87.22) Bonum ex malo non fit, “Good does not come from evil.” His formulation is classic Stoicism; holding that virtue is self-contained and cannot arise from vice or wrongdoing. An evil man cannot do good acts. For the Stoics (which deeply informs my New England Pathology) the moral universe is a realm of intrinsic rational order, and any claim that good could arise from evil would imply that vice is somehow productive, which undermines virtue’s purity.

That reformed libertine, St. Augustine argued the opposite (in part no doubt to justify his own behavior). In his Sermon LXI (61) he offers a pointed and deliberate contradiction of Seneca’s conceptualization:

“Et hoc bonum est, ut ex malo surgat bonum. Non hoc dixit Seneca. Philosophus erat, et dixit: Bonum ex malo non fit. Et ecce fit: non ab homine, sed ab omnipotente artifice.”
(And it is a good that good arises from evil. Seneca did not say this. He was a philosopher, and he said: ‘No good comes from evil.’ But behold, it does: not by man, but by the omnipotent craftsman.)

St. Augustine’s argument is theological not philosophical. He needs to demonstrate the power of redemption. The cross as the ultimate evil turned to good. The crucifixion as salvation.

I must admit, my younger self rejected Augustine’s arguments as too apologetic, too philosophically weak – “God judged it better to bring good out of evil than to suffer no evil to exist” – really? The whole enterprise of The City of God was silly. Why allow the Fall only to provide for the greater glory of redemption? A righteous clockmaker would simply make it correctly the first time.

Yet watching humans be human, I can only conclude we gotta learn the hard way. So perhaps St. Augustine was on to something.

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Update 10/20/25

A 2015 study published in the Annals of Allergy, Asthma & Immunology concluded that there was “emerging evidence … regarding potential benefits of supporting early, rather than delayed, peanut introduction during the period of complementary food introduction in infants.” In short, early exposure to allergens was recommended.

These recommendations must have been broadly adopted because following the publication, and well reported by media outlets, were the results (this from the American Academy of Pediatrics): “We detected decreased rates of peanut or any IgE-FA in the period following the publication of early introduction guidelines and addendum guidelines. Our results are supportive of the intended effect of these landmark public health recommendations.”

The Meaning of Life

I learned about Sara Walker from a podcast with Lex Fridman. The entire conversation is worth the listen: Her conceptualization is brilliant and presented in an unassuming manner that belies the seriousness of the implications. Fridman’s long-format interviews are excellent in mining a guest’s breadth and depth of thought and I found Sara’s conceptualization of life fascinating, especially her use of scale to describe life as one of the largest structures in the universe because she incorporates time. Juxtaposing the size of life against a cosmic scale was an upending comparison.

There’s a line from Vonnegut’s Slaughterhouse-Five that always catches:

All moments, past, present, and future, always have existed, always will exist.

Vonnegut’s formulation is redolent of Nietzsche’s Eternal Return: that what has been will be again, with no variance and no relief. Both views load us with metaphysical weight.

Vonnegut’s Tralfamadorians see time all at once and thus perceive life – each moment from birth to death – laid out like beads on a string.

“So it goes”

Billy Pilgrim, the war-haunted protagonist, bounces along that string involuntarily, unstuck in time. Perhaps being unstuck is a glimmer to the scale Sara Walker is alluding to: Her radical definition of life, not just the materialist molecules, but rather the entire chain of causes that led to its existence. Life, in her view, isn’t just here-and-now. It’s stacked-temporally, causally, recursively.

When Walker says life is “large,” she doesn’t mean big like a star. She means large like an algorithm that’s been running for four billion years. Every cell, every limb, every language and habit and scar is part of a recursive computation that remembers, anticipates, and somehow carries time forward.

So maybe the Tralfamadorians were simply too introspective. They saw time laid out and determined because they saw the entirety of a solitary life. But Sara has a broader view still. Its not just the individual but the species, life builds with it.

But how would the compendium, that building of life be accomplished?

In the Dune saga, Frank Herbert imagines the Bene Gesserit who can access “Other Memory,” the full sensory lives of their maternal ancestors: Genetic memory. Science validates Herbert’s vision. Research into epigenetics has shown that trauma, malnutrition, even scent aversions can leave marks on DNA that persist across generations. Holocaust survivors’ children have altered cortisol receptors. Mice whose fathers feared cherry blossom scent inherited the fear-even if they’d never smelled it. These biochemical echoes result from modifying gene expression based on the experiences of prior lives. We are-quite literally-haunted by our ancestors – we have genetically learned from the pain of others.

Here’s where it gets personal. If Walker is right, if life is structured in composite time, then our genealogical archives might be more than nostalgia. It might be survival instinct. To know your grandfather’s path through the Depression, or your great grandmother’s flight from famine, is not just to “honor the past,” it’s to glimpse the inputs that shaped your own default setting. In this light, genealogy isn’t just biography, it’s system analysis. Your family becomes a lineage of recursively structured information flow.

[Let me be clear, I am not advocating a determinist model, this is not predestination by DNA – replacing a Calvinist damned at birth by God. I am merely pointing to the latest evidence that information can be transmitted generationally, genetically.]

Take Walker seriously and we are all discursive agents integral to the continued development of life: at the intersection of narrative, biology, and recursive memory. We are not poor players that strut and fret upon the stage, but key conduits that propel life through time. We are causal agents that generate novelty against the grain of entropy.

So maybe the real Tralfamadorian error wasn’t in how they saw time. It was in their fatalism. “So it goes” is elegant resignation. But Walker’s conceptualization is one of continued growth. You don’t escape your history. You ingest and metabolize it. You incorporate it into form and pattern.

Playing with a gastronomical analogy is fitting for a biological definition, but my default is Greek. And Walker by trying to separate from both the Vitalists and the Materialists, sildes back to Aristotle’s telos. Life as anti-entropy is purposeful. Walker posits life’s new telos. She doesn’t name Aristotle, but I hear his echo – perhaps she is a direct descendant? Let me dilate:

There’s a moment in every enduring story where something old is taken apart and reassembled: a king unseated, a city razed, a body aged. And yet, somehow, the thing remains itself. This is the dilemma posed by the Ship of Theseus: if every part of the ship is replaced over time, plank by plank, is it still the same ship? And if you reassemble the discarded parts into a new vessel, which ship holds the true identity?

Aristotle provides the necessary distinctions to solve the riddle. In his Metaphysics, he distinguishes between matter (hyle) and form (morphe), insisting that what something is depends not merely on the stuff it’s made from, but on the telos it realizes. A knife is not just metal; it’s metal shaped to cut. A human is not just flesh, but flesh patterned toward rational activity. And a ship? It’s a thing that sails. Its identity may not reside in the wood at all, but in the continued act of navigation and sailing: its purpose enacted over time.

Sarah Walker’s definition of life adds modern resonance to this classical framing. She argues that living systems are vast structures in composite time, not because they’re spatially enormous, but because they embody the memory of their own construction. DNA is not inert – it is historical architecture. Each cell is a palace rebuilt in reference to palaces past, with blueprints written in adaptive scars and recursive function. If the Ship of Theseus still sails, it does so because the information that makes it a ship continues to govern its becoming.

This brings us close to the Aristotelian idea of entelechy – the actuality toward which a potential aims. Life, for Walker, becomes a process not just of chemical reactions, but of sustained identity through time via information that acts as a kind of internal cause. The form is not static, but alive and evolving and intentional in the Aristotelian sense. It seeks persistence, adaptation, and propagation. Not because it chooses to, but because those that did not, are no longer with us.

Walker and Aristotle both, it seems to me, reject dualism (bad Descartes!) without collapsing into reductionism. The soul (psyche), for Aristotle, is not a ghost in the machine, but the form of a living body. It is the organizing principle, the actuality of a body that has the potential for life. So when Walker speaks of life as causal structure encoded in information she is, perhaps unknowingly, reviving an Aristotelian intuition: Identity is not in the pieces, it’s in the pattern. More precisely, it’s in the pattern’s persistence through change.

This also re-frames the Theseus dilemma: it is not the planks or even the continuity that matters. It is whether the ship remembers how to sail. If the function endures, if the pattern persists, if the structure recursively reaffirms itself-then identity is not lost. It is transformed, matured, tested.

And that is how I interpret Walker’s formulation of what life is. Not a continuity of parts, nor even of memory, but of capacity of the ability to generate structure that sustains itself in the face of entropy.

So the ship sails on. Not because it’s made of original wood, but because it still catches the wind.

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A Stoic coda?

As much as I liked that final turn of phrase, I am not satisfied that telos is the right idea to end on. What if information isn’t just structure—but story? Sara Walker’s formulation already nudges us in this direction. Life, as she frames it, is information with causal efficacy. In this view, a living organism is less a machine than a sentence in progress. And the human being? Perhaps the longest, most recursive narrative structure in the known universe. 

Walker has suggested that the arc of life includes not just biology, but our extensions: our tools, our language, our civilization. We are story-bearing, story-making entities, broadcasting patterns into space, encoding ourselves in stone, fiber, signal, silicon. Our survival depends on coherence: on keeping the story intelligible across generations. 

Thus our myths, scriptures, oral traditions, and epics are not mere entertainment or ornament, they are cognitive infrastructure. Stories do what DNA does: they remembered what worked, what went wrong, who we fear becoming, and what we hope we might be. The Iliad, the Upanishads, Gilgamesh, the Analects these are operating systems. 

Which brings me to the Stoics, who might have nodded gravely at Walker’s notion of life as causal structure. For the Stoics, the cosmos itself was Logos, which I capitalize because it is best translated not as ‘word’ but as ‘ordered rational speech.’ The Stoics believed the world was made, sustained, and understood as a kind of divine narration. God, they said, speaks the world into being—not once, but continuously. Creation is not an act, but a verb: an ongoing utterance. And as speaking animals, we are the image of God.

When we tell stories, we participate in that creative unfolding. To narrate is to bind cause to consequence, to name patterns, to cast significance. In that sense, storytelling isn’t just memory—it’s a microcosmic version of what life does: recursively structure the future using the grammar of the past, it is to make meaning resilient against time. 

So I give the final word to Gene Wolfe (Shadow of the Torturer):

Certain mystes aver that the real world has been constructed by the human mind, since our ways are governed by the artificial categories into which we place essentially undifferentiated things, things weaker than our words for them. We believe we invent symbols. The truth is that they invent us; we are their creatures, shaped by their hard, defining edges.