There's a real pattern in communal societies that statisticians have noticed and not explained well. Births come in waves. You'll have a stretch of three or four years where nobody in the village is pregnant. Then suddenly six women are. Then a quiet year. Then another wave.1
Derek's account, from his own family compound: "My backyard, I can go back there and there's like 200 people and they're all my family members, and like 20 of them are pregnant. Okay, a wave is coming, right? A wave is coming. And you see that a lot. It's normal."1
Why? The Igbo cosmology has a name for the operating force: Alumu (also called Alomo / OMO in some transliterations). It is the feminine energy of creation — the principle of creativity, birthing, fortune-attracting, wealth-pulling. And it has a specific property the cosmology emphasizes:
Alumu is contagious. It transmits between people just by proximity.1
Derek's exact framing: "Alumu has a sinking nature. So if somebody's Alumu is high and you get around that person, your Alumu gets high too. It increases too. If somebody's Alumu is low, you get around that person, theirs is low too."1
"Sinking" is doing specific work here. It is not just contagion (your Alumu becomes more like the people you're around). It is equilibration — high-Alumu and low-Alumu environments pull adjacent people toward themselves. The energy doesn't just spread; it levels between participants in the same space.
This explains the birth-wave pattern. One woman gets pregnant. Her Alumu is now actively high — she is, structurally, channeling the creative principle at full strength. Women near her experience the equilibration pull. Their own Alumu rises. The rising Alumu increases their fertility-readiness. They become more likely to conceive. The whole cohort moves together.
The mechanism is not magical at the individual-physiological level. The cosmology says the operating force is Alumu; the physiological manifestation is what Western reproductive medicine measures (hormones, ovulation timing, libido changes). The Igbo frame names the cosmological force; Western science describes how it expresses in bodies.
The list goes wider than birth. Alumu is the feminine creative principle, full stop:1
These are not separate domains the Alumu handles. They are the same force expressing through different surface-features. Whether the new thing being created is a baby, a piece of art, a successful business deal, or a stretch of good luck — all of it is Alumu in operation.
Derek's example: "You get around lucky people, you get luckier. You get around people who are attracting fortune, you attract fortune more. You get around people who are pregnant, you are more likely to get pregnant."1
The contagion principle operates the same way across all the manifestations. Standing near the lucky person raises your luck. Standing near the wealthy person raises your wealth-attraction. The cosmology gives one mechanism for all of it.
The Igbo age-grade system clusters children by birth-wave. Age grades are not arbitrary cohorts. They are groups of children born within a natural wave — typically three or four years.1
"So one wave of births, that's an age grade. Usually four years, three years, four years, three years — births happen in waves, waves, waves."1
This is partly why age-grades function as such tight social units throughout life. The cohort wasn't formed by chronological accident. The cohort came in during one Alumu-wave, was conceived under shared cosmological conditions, and carries that shared substrate forward. The age-grade governance practices (see Umuada and Igbo Women's Governance for the parallel Umuada women's-union architecture) are operating on cosmologically meaningful cohorts, not just on calendrically-defined groups.
The cosmology is doing real explanatory work here. Western readers tend to puzzle at why traditional societies treat age-cohorts as so structurally important. The answer the Igbo frame gives: because they are important — they share the Alumu signature of one wave, and the wave has consequences for the rest of their lives.
The page should be useful. The cosmology has an implication for living.
If Alumu is contagious by proximity, then who you spend time with determines your Alumu level more than your personal effort. You can be a hardworking, creative, fortune-seeking person — but if you spend most of your time around low-Alumu people, your own Alumu sinks. You will not generate the manifestations (creativity, wealth, fortune) that require high Alumu, no matter how hard you try.
The corollary: high-Alumu environments will lift you whether you deserve it or not. Stand near the pregnant. Stand near the creating. Stand near the prospering. The contagion will operate on you without your asking.
This is one of the strongest practical claims in the Igbo cosmology. Western individualist framing says you produce your own outcomes through your own effort. The Alumu framing says: your outcomes are heavily determined by the cosmological field you're standing inside. The field is contagious. The field equilibrates. The single most consequential practical decision you make — under this framing — is which fields you stand inside.
Single source: Derek Fodwell (The Medicine Shell), "(New Moon) Onwa Uzo Arusi Begins — Ask me (Almost) Anything" YouTube live transcript, 2026-02-18.1 Practitioner account, Tier 2 per african-spirituality-sources skill. Auto-generated transcript; all claims [PARAPHRASED].
Key passages: lines 309-315 (Alumu as feminine energy of creation; "sinking" contagious nature; pregnancy wave explanation; high-Alumu/low-Alumu equilibration; deals with creativity, wealth-attraction, good-fortune-attraction); lines 313-318 (age-grade as Alumu-wave cohort; 3-4 year birth-wave pattern; age-grade governance structures).
The Alumu material is embedded in the broader discussion of why births cluster in waves in communal societies. Derek introduces the concept to explain a specific observation (his backyard with 200 family members and 20 pregnancies at once) and develops the cosmology around it.
The first tension is the relationship between Alumu and Ana (the moon, treated in Onwa Uzo Arusi). Both are feminine cosmological principles. Both are connected to creation and birthing. Are they the same force under different names, or distinct? The source does not directly relate them. The page should hold both as feminine-principle concepts without forcing identity until a source clarifies.
A second tension: the Alumu framing implies that low-fertility / low-creativity / low-prosperity individuals "drag down" the Alumu of those near them. The implication is uncomfortable — it suggests the practical advice is to avoid spending time with struggling people, which violates social-care intuitions. The cosmology may resolve this: Alumu is not the only force operative, and other principles (ancestor-relationship, character) may compensate for or override Alumu-sinking. But Derek does not develop this in the source. The page should flag the implication honestly rather than smoothing it over.
A third tension: the contagion claim is empirically testable. Western reproductive medicine has documented phenomena like menstrual synchrony in close-living women (Martha McClintock's 1971 study, though subsequently disputed). Pregnancy clustering in communal societies is reported anecdotally. Does the Alumu framework correspond to a measurable phenomenon, or is it a cosmological reading of normal statistical clustering? The two readings are not mutually exclusive. The page holds the framework as practitioner-cosmology that may track a real phenomenon Western science has partially observed.
Single source on this specific concept. The productive comparison is with the Western "social contagion" literature (Christakis and Fowler's work on obesity, happiness, smoking spreading through social networks) and with the eastern-spirituality concept of shakti (active feminine creative principle).
Christakis-Fowler social contagion: empirical Western research documenting that behaviors (obesity, happiness, smoking) spread through social networks via mechanisms partially mediated by physical proximity. Effects measurable up to three degrees of separation. The structural parallel to Alumu: cosmologically posited contagion mechanism finds Western empirical confirmation in narrower scope.
Hindu/Tantric shakti: the feminine active creative principle, often associated with specific deities (Lalita, Kali) and with the practitioner's own creative capacity. The structural parallel to Alumu: feminine-energy-as-active-creative-force.
Read together: the Igbo Alumu framework articulates at full cosmological scope what Western network science has empirically validated at narrower scope (social contagion of measurable behaviors) and what Tantric tradition has developed at deity-practice scope (shakti). Three traditions converging on the same underlying principle: there is a contagious-feminine-creative principle that crosses persons by proximity. Western: empirically narrow, mechanism partially identified. Tantric: cosmologically broad, deity-personified. Igbo: cosmologically broad, principle-level rather than deity-level.
The vault gains by holding all three. The Western empirical work tells the cosmological frameworks something is real here. The Tantric and Igbo frameworks tell the Western work the principle is broader than you've yet measured.
The contagious-energy principle has cross-tradition stability. The Igbo specificity is the feminine-creative-principle framing and the equilibrating sinking mechanism.
Eastern Spirituality: Shakti as Creative Power (proposed page or handshake target) — Tantric shakti is the feminine creative principle, often described as the active energy through which manifestation occurs. The structural parallel to Alumu: feminine-energy-as-creative-engine. The structural difference: shakti in Tantric practice is typically cultivated internally through specific practices (mantra, asana, kundalini work); Alumu in Igbo cosmology operates externally through proximity contagion. What the parallel produces: both traditions identify a feminine creative principle as the active force behind manifestation. They differ on how it's accessed. Tantric: internal cultivation. Igbo: proximity to high-Alumu fields. Read together, the implication is that the same feminine-creative principle has two access modes — interior practice and exterior environment — and a complete framework would integrate both. A Tantric practitioner who ignores their social field is leaving half the access mode unused. An Igbo practitioner who relies only on proximity without interior cultivation is leaving the other half unused. The vault should propose a synthesis: internal cultivation + external positioning = full access to the feminine creative principle.
Psychology: Emotional Contagion (proposed page if not in vault) — empirical research documents that emotional states spread between people through facial-expression mirroring, voice-tone resonance, and other unconscious channels. The structural parallel to Alumu's sinking-nature: states equilibrate between proximate individuals. What the parallel produces: emotional-contagion research is the Western empirical recovery, at narrow scope, of the broader Alumu principle. Western research focuses on emotional states (joy, anxiety, anger). The Igbo principle extends to generative states (fertility, creativity, fortune-attracting). Same mechanism, broader manifestation-set. The implication for the vault: when Western research validates a narrower version of a non-Western principle, the cosmological framework is predicting further empirical findings yet to be made. The Igbo cosmology says creativity spreads by proximity the same way emotion does. Has this been measured? The Christakis-Fowler work on idea-spread suggests yes, partially. The full picture has not yet been studied in the West.
Behavioral-Mechanics: Social Proof as Influence Mechanism (handshake to Cialdini-tradition material) — Cialdini's social-proof principle holds that people imitate the behaviors of those around them, especially in conditions of uncertainty. The structural parallel to Alumu contagion: behavioral patterns spread by proximity. What the parallel produces: social-proof in influence psychology is treated as a vulnerability (something to defend against or to exploit). The Alumu framing treats the same mechanism as a resource (something to use deliberately by positioning yourself near high-Alumu fields). Reframing the same mechanism from threat to resource changes practical recommendations. Influence-defense literature says: notice when social-proof is operating and resist it. Alumu-framed practice says: notice when Alumu-equilibration is operating and choose your fields. The pragmatic move differs.
Reading these handshakes together: Alumu is the cross-tradition signature of proximity-mediated equilibration of generative states. The shakti tradition, emotional-contagion research, and social-proof influence literature each capture a piece of the larger pattern: states spread between people through proximity, the spread is largely unconscious, and the practitioner who understands the mechanism can either be passive recipient (the default) or active field-positioner (the design choice). The Igbo framework is operationally distinctive because it makes the positive direction of contagion explicit — most Western research has focused on negative contagion (depressed affect, obesity, smoking) but the Igbo prediction is that fertility, creativity, and fortune all spread by the same mechanism. If true, this is one of the highest-leverage life-design insights available, and it has been undertheorized in contemporary thought primarily because the cosmological framework that names the principle has been culturally marginalized.
The Sharpest Implication
If Alumu equilibrates by proximity, then the most consequential decision in your life — under this cosmology — is who you stand near. Not who you marry. Not where you work. Not what you study. Who you stand near, day to day, in physical proximity.
This destabilizes the Western framing in which the central life-decisions are about your own actions and intentions. The Alumu framing says: your individual effort matters far less than your environment. Stand in a high-Alumu field and creativity comes through you regardless of your strain. Stand in a low-Alumu field and your hardest work produces less than your neighbor's coasting.
This produces an uncomfortable diagnostic for stuck creative work, stuck financial situations, stuck reproductive intentions. The cosmology doesn't say try harder. It says change your proximity. Find people whose Alumu is high in the dimension you want to manifest. Stand near them. Watch what happens to your own field.
The Western "manifest your desires" tradition has an incomplete version of this — visualize what you want, attract it through alignment. The Igbo framing is more specific: visualization without proximity-positioning doesn't engage the contagion mechanism. The high-Alumu people are the field. You have to be near them.
The practical move for a reader who takes this seriously: audit your physical-proximity choices. Where do you spend your hours? Around whom? What is their Alumu level in the dimensions you want to develop? The audit may produce uncomfortable answers — many of us spend our hours near people whose Alumu is low in our most-desired dimensions, sometimes by historical accident, sometimes by genuine affection. The cosmology doesn't tell you to abandon those people. It tells you to recognize the field-effect of your time-allocation, and to choose deliberately.
Generative Questions