JL.
SWE · DENVER
JL.
WRITING / NOTES

Notes on building and thinking.

Field notes on software engineering and agentic AI, plus personal takes on the sayings and habits worth arguing with.

WRITING / NOTES

Notes on building and thinking.

Field notes on software engineering and agentic AI, plus personal takes on the sayings and habits worth arguing with.

SELECTED — RECENT
Speed is a survival trait for startups

Six takeaways, stripped of the pep talk, on why every process in a startup should be judged by how much time it burns between an idea and its test in reality.

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Whether You Think You Can or You Think You Can't — You're Right

A Henry Ford line, and why belief is a muscle you train with milestones you can actually hit — not deadlines you can't.

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The question is the skill: how senior developers ask for help

Five upgrades that separate a question that hands off the whole problem from one that hands over a narrowed, pre-investigated slice of it.

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Architectural decisions are trade-offs, not answers

Seven takeaways for making architecture calls deliberately — from coupling and monoliths to why you should never rewrite the legacy system.

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The Recipe Was Developed, but the Bread Never Got Baked

Why people polish the idea forever and never ship the thing — and the standard I want to hold myself to instead.

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Littering is a sign of low IQ

Not IQ in the test-score sense — but littering is still a small, perfect test of whether someone understands they are part of a bigger system.

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The cost of not repeating yourself

A DRY-up that starts as a good day in code review and ends as a function nobody can touch — why duplication and the wrong abstraction are not the same cost.

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Emotion Blurs Logic

The difference between reacting and responding, and the two anchors that move me from one to the other.

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Character is not built in good times, but in bad times

You learn more in bad times than good ones — but too much bad time is its own risk, and nobody needs to be right all the time.

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Being great at everything is being great at nothing

Good is cheap — about 20 hours of focused practice. Great is expensive, because of one brutal rule: diminishing returns.

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