Poetry · Software · Research · Music · Art

…in surviving the restless onslaught of knowledge,
we have lost many good metaphors…

Rodney Jehu

I make things with language — sometimes as poems, sometimes as software, sometimes as theory about what language does to the minds that use it.

♫  SoundCloud
Research

Umwelt Engineering

2026

A framework for designing the linguistic cognitive environments AI agents reason in. If prompt engineering is what you say, and context engineering is what you show, then umwelt engineering is the world the agent can think in — shaped by the vocabulary it’s allowed to use.

4,470 trials across 4 models. Removing the verb “to be” selectively degrades syllogistic reasoning while leaving causal reasoning intact. The constraint doesn’t make the model dumber — it reshapes what kinds of thinking are available.

Paper + Code + Data

Claude Code Is Not a Code Editor

March 2026

Most people use Claude Code to write functions. I turned it into a personal operating system — one that shops for me, builds a wiki from my conversations, stress-tests my ideas, and remembers who I am across sessions. Skills, hooks, memory, handoffs, and meta-agents: patterns for using an LLM as a general-purpose automation tool.

Read →

Epistemic Memory

2026

What should a machine remember about a person?

A protocol for AI memory that models who you are — with confidence scores, belief decay, contradiction tracking, and the humility to hold its understanding as hypothesis rather than fact. Because a tool that pattern-matches you into a fixed version of yourself stops actually seeing you.

GitHub

Heartwood

2026

A personal knowledge graph that compounds over time. Local-first architecture with Three.js visualization, semantic wikilinks, and a reasoning engine that does belief revision and link prediction across your notes. Built because I needed a place where everything I learn could talk to everything else.

GitHub

Rain Dancer

July 2020

she squinted at us in the gathering dust and trapped a few hard-won tears in her crow’s feet her white hair flailing wildly her ululations escaped as she twirled and we knew in a flash that the dancer never really left — our village was not yet ridiculous enough for a dry joke her toes rapidly pitter-pattered pocking the hard ground that had become cracked like old parchment bearing a fading contract she called us wordlessly into the growing fray and we began to clap faster as she slapped her chest and grunted sharp staccato ugh-ugh-ughs that whistled though her last teeth she coughed and spat and then plucked a wind string that led back to her first dance her knees knocked together and then she flinched with a HA! and then the robin’s egg broke and the sky burst over us she took her last bow in the crashing applause plunged backwards through the falling curtains and exhaled fragrant petrichor

marriage

October 2017

marriage: –bedsheet tug-of-war (brrr) –your alarm saving mine (always) –bathroom time (should i leave it running?) –have-a-nice-day-kisses (running late!) –your hair on my jacket (10 am meeting) –your message: smiling pile of poo (tmi) –crowded 6 train back (homeward!) –food (…i’ll get the dishes hun) –middle couch cushion (jenga feet) –existential dread (whatchawannawatch?) –bed time (COME.TO.BED!) –super serious life-talk (can we, like, tomorrow?) –…i love you too…too much (no…don’t say that…it’s true…how much…this much!!!)dedicated to Ruthie — my heart’s rest, the dream of my past, and my waking joy

Against Knowledge

July 2020

nothing is a thing that wasn’t first a process that wasn’t first a butterfly before it was pinned to cork parades and much too much to grasp, the living are not among the known decency asks sometimes for ignorance and shrouds lepidopterists are a callous breed

Edges

March 2015

We have learned to love The edges of things— Beginnings and ends, Mirages, Spooky apparitions at a distance, That closer inspection Dispels— And forget how everything is contiguous soup Which drowns all meaning. Human ingenuity is this: Draw a line to make one two; Create a cage, invent a freedom; Carve me, out of us.
Drawings

Rio

2021

Rio — colored pencil portrait

Colored pencil portrait. Fauvist green palette.

Awkwafina

2021

Awkwafina — colored pencil portrait

Colored pencil portrait.

Elephants

2020

Elephants — colored pencil

Colored pencil.

Desperate Enough

2025

Final Frontier

Journeyman

Na Wewe

Count Vladislaus (remastered)

About

Rodney Jehu

I grew up in Accra, Ghana. I studied Russian at Colgate and political science at NYU. I write poems, build software, and research how invisible structures shape the way minds — human and artificial — actually work.

Right now I’m researching how linguistic constraints change the way AI models reason. But the deeper interest is in invisible structures — the ones that shape thought before you notice they’re there.

I live in New York with my wife Ruthie and our three children.