LEON

COEFFECT / JOURNAL

Markets. Machines.
The city after hours.

Latest edition · 23 October 2026

The topic collection

Words & Trivia.

Words to keep and questions to try, with answers you can reveal.

Switch topic

43 notes across 26 editions. Dates refer to original publication; prices, events and availability may have changed.

Word: supervenience

Supervenience — soo-per-VEE-nyuhns — describes a dependence relation: there can be no difference in one set of properties without a difference in another.

Read the note →

Two useful prompts for today

- In the portfolio meeting: what part of this strategy's apparent liquidity disappears if financing and redemptions move together? - In the Lean review: what is the smallest trusted kernel, and what still depends on the specification being right?

Read the note →

Two useful prompts for today

- In a financing review, ask: which risk is being reduced, and which risk is merely being moved into the timing of collateral calls? - In an AI-research review, ask for the evaluation harness and failed branches before the winning result.

Read the note →

Word of the day: mereology

— meer-ee-OL-uh-jee. The formal study of parts and wholes: a handle belongs to a door, and the door to a building; ordinary parthood lets us carry that relationship through.

Read the note →

Word of the day

Anacoluthon (an-uh-kuh-LOO-thon): a sentence that shifts from one grammatical construction to another before completing the first.

Read the note →

Equipollence

ee-kwi-POL-uhns: equality of power or significance; in one logical sense, mutual implication between propositions.

Read the note →

Parataxis

Parataxis places statements beside one another without establishing a causal mechanism.

Read the note →

Haecceity

Haecceity names the particular “thisness” that an inventory of properties misses.

Read the note →

Copy this link

Select the address below and copy it to share.

Open this link →