Brave New IA World

Brave New
IA World

Software Engineering in the Age of AI Agents.
Classical processes. Multi-agent systems. The future of how we build.

A blog by Ricardo Costa

Latest Posts

#008 — Series Finale

The Economics of AI-Driven Development — When Process Becomes Free

RUP was right about the value of structured process. It was wrong about the economics. Token deflation has collapsed the cost of specification, governance, and verification by five orders of magnitude. The math now works — and it changes everything.

#007 — Behind the Scenes

The RUP AI Kit — Six Agents, One Pipeline, Zero Meetings

A tour of the actual machinery: the six agents (Governor, Business Analyst, Requirements, Architect, Developer, QA), the artifacts they produce, the Progression Protocol, and real results from a brownfield reverse engineering run.

#006 — The AIRUP Series

Building an AIRUP Prototype

Three pipelines build the same library system. One invents a feature nobody asked for. This is what "show, don't tell" looks like — with real metrics, real code, and a surprise ranking system.

#005 — The AIRUP Series

Benchmarking AIRUP

Everyone claims their multi-agent system "works." But compared to what? Three pipelines, nine metrics, five threats to validity, and one honest answer. Time to design an experiment that actually proves something.

#004 — The AIRUP Series

SDD Meets RUP — When Modern Specs Rediscover Ancient Wisdom

The mapping between SDD spec formats and classical RUP artifacts isn't a coincidence — it's convergent evolution. How twenty-year-old process engineering turns out to be surprisingly good scaffolding for AI agents.

#003 — The AIRUP Series

The AI Governor Pattern

Multi-agent systems are powerful. They're also expensive. Meet the role that keeps them from burning through your budget while debating variable names. Token economics, circuit breakers, and why the cost problem is solving itself.

#002 — The SDD Series

What Is SDD And Why It Might Save RUP

Write the spec. Let the machines do the boring part. What Specification-Driven Development actually is, who's using it, and why it's the missing piece to resurrect RUP.

#001

Can AI Resurrect the Rational Unified Process?

What if the methodology we abandoned for being "too heavy for humans" was actually perfect — just waiting for non-human executors? Introducing AIRUP and the AI Governor.