GRATICE.IO  ·  NOTES

Technical thinking
and practice.

Engineering notes, system design thinking, and field observations. Written for those who prefer precision over abstraction.

Essay
Vibe Coding, 30 Years Ago
In the 1990s, I decomposed systems and assigned them to graduate engineers without written specifications — driven by debate, not documentation. What is now called vibe coding, I was doing with humans.
Essay
Physical Security First
Most IT operations assume the network perimeter is the boundary. It is not. A server is only secure when it remains protected even after someone touches it.
Essay
Life as a System
Life is governed by intellect, shaped by probability, and constrained by chance. This is not a metaphor. It is a structural description.
Essay
台語聲調與身體運動
台語的變調與鼻音,若視為喉嚨、下顎與頭部的協調運動,比記憶音高規則更有效率。成人學習者的實踐模型。
Technical
Email Forwarding Alias System
Originally implemented in the 1990s with sendmail aliases. Rewritten for modern requirements: HMAC-SHA256, deterministic generation, lowercase Base32, URL normalisation.
Technical
Gratice Network Architecture Statement
Deterministic network architectures built on open standards. Headscale for small deployments, BGP-native routing beyond that. No proprietary control planes.
Technical
Confidential Computing Infrastructure
A design that does not assume the cloud trust model. Cloud administrators, hypervisors, and forensic analysts are all defined as adversaries. AMD SEV-SNP, vTPM, attestation.
Finance
Implementation Languages for Financial Infrastructure
Go and Rust improve how systems behave under execution. OCaml improves what systems are allowed to do. For capital transfer, semantic safety must take precedence.
Finance
Deterministic Stablecoin Transfer Infrastructure via Secure CLI
Capital should move with the same precision, speed, and reliability as code. A CLI-based USDT/USDC transfer system designed as deterministic and auditable infrastructure.