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Riku

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Analyst’s corner

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Riku

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2d ago

The AI’s Survey Charts Looked Perfect. Then We Asked What to Do Next.

Anyone can upload a CSV, type “Analyze this survey and summarize the key issues,” and get sleek charts and plausible-sounding insights in a…

The AI’s Survey Charts Looked Perfect. Then We Asked What to Do Next.

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Stackademic

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Riku

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Nov 8

Make the AI Calculate Before You Believe It — Three Ways I Check Answers

Ask several AIs the same question, and sometimes their answers disagree. All of them sound confident. From the prose alone, I cannot tell…

Make the AI Calculate Before You Believe It — Three Ways I Check Answers

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AEO Soup

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Riku

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Nov 8

The Day I Threw Out a Thousands-of-Lines Spaghetti Prompt

An architecture rewrite — and a first step into LLMOps — cut our product’s complaints in half.

The Day I Threw Out a Thousands-of-Lines Spaghetti Prompt

Riku

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3h ago

AI-DLC Works Once You Know What to Build

What my team learned from AI-DLC Workflows v2, and how I work before there is a spec

A person compares several rough app prototypes at a desk, discards most of them into a wastebasket, and a clean structured pipeline of stages leads to a finished specification on the right.

Riku

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1d ago

We Blamed the Model. The Prompt Was Contradicting Itself.

How a pile of prompt patches hid a design problem, and the three-day tool that made my team see it

A tangled mass of connected workflow nodes beside a cork board crowded with conflicting sticky-note rules.

Riku

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2d ago

Build the Measuring Instrument First

What micromachining metal taught me about shipping LLM products

Build the Measuring Instrument First

Riku

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3d ago

Google’s New Judgment-Only AI Beat Jev — But the Tricks That Helped Jev Barely Worked

Same 112 texts, same questions, same scoring. Gemini won every round — and the bundling tricks that helped Jev barely moved the needle.

Google’s New Judgment-Only AI Beat Jev — But the Tricks That Helped Jev Barely Worked

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Analyst’s corner

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Riku

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3d ago

Shadow AI in the GenAI Era: How We Rescued Data Governance from BigQuery Chaos

When non-engineers start querying databases with AI, architectural debt stops being a backend annoyance. It morphs into a full-blown…

Shadow AI in the GenAI Era: How We Rescued Data Governance from BigQuery Chaos

Riku

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4d ago

Leaving at 5 PM During a Security Crisis Got an Engineer Scolded for “Lack of Ownership”

How “Performative Solidarity” and “Doing Things for Show” Are Distorting Modern Tech Culture

Leaving at 5 PM During a Security Crisis Got an Engineer Scolded for “Lack of Ownership”

Riku

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5d ago

Your “Vibe Coded” Prototype Is Just a Scribble

How to turn AI-fueled exploration into executive-ready prototypes in 5 steps.

Your “Vibe Coded” Prototype Is Just a Scribble

Riku

Riku

I'm Japanese. I started as a web engineer and have worked on data analysis, machine learning, and AI-powered web features. I now develop AI agent services.

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