Medium

Riku

Pinned

Riku

·

Nov 7

The More It Remembers, the More It Forgets — When Muse’s Memory Passed 500KB

I have been using the AI agent Muse for 15 days. Every day, I have given it tasks ranging from checking email and my calendar to research…

The More It Remembers, the More It Forgets — When Muse’s Memory Passed 500KB

Pinned

In

Stackademic

by

Riku

·

6d ago

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

Pinned

In

AEO Soup

by

Riku

·

6d ago

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

·

2h 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

·

1d ago

Build the Measuring Instrument First

What micromachining metal taught me about shipping LLM products

Build the Measuring Instrument First

In

Analyst’s corner

by

Riku

·

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.

Riku

·

2d 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

In

Analyst’s corner

by

Riku

·

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

·

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

·

4d 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.

Following

Help

Status

About

Careers

Press

Blog

Store

Privacy

Rules

Terms

Text to speech