Hi, I'm yaluotao.

Building things on the web. Interested in design systems, developer tools, and the craft of simple software.

Recent Writing

GPT Picked "Neutral" for All 32 MBTI Questions

Tested three frontier models with 5-point and 4-point scales. GPT picks neutral for everything, Claude is always INFJ.

Dec 12, 2025
Stop Calling It 'Vibe Coding'

Six months of AI-assisted programming. Why 'vibe coding' misses the point, and what actually works.

Dec 4, 2025
Building an Impression Tracking System with AWS

S3 + Firehose + Athena for storing and querying massive events. Hit some walls, learned some things.

Dec 2, 2025