Blog
Fine-Tuning vs Prompt Engineering vs RAG: When to Use Each (And the Fourth Option Nobody Mentions)
Your AI model hallucinates with your company’s data. Is the fix RAG, fine-tuning, or a better prompt? The right answer depends on a single …
An Engineer's Productivity Stack in 2026: The Tools I Use Every Day
After 60+ articles, 9 technical series, and 4 production applications, this is the real stack I use every day. No sponsorships, no …
Flywire: How a Spaniard Built the Brain of International Payments from Boston
When a Korean student tries to pay tuition at a university in Madrid, they face a maze of opaque banking fees, unfavorable exchange rates, …
Thomas Bayes: The Reverend Who Taught Us to Update Our Beliefs with Data
How do you update your opinion when you receive new evidence? If your answer is ‘with data,’ congratulations: you’ve been practicing …
RAG in Production: 7 Anti-Patterns That Destroy Precision (And How I Fixed Them)
RAG is the aspirin of generative AI: everyone prescribes it, almost no one truly understands how it works, and when it fails, the patient …
EU AI Act: What Every Engineer Needs to Know (No Lawyers Required)
On August 2, 2026, most obligations of the EU AI Act come into force. Maximum fine: 35 million euros or 7% of your global turnover. And most …
MCP (Model Context Protocol): The Standard That Wants to Be the USB of Artificial Intelligence
Today, every LLM has its own way of connecting to your databases and tools. It’s a chaos of proprietary integrations. MCP (Model Context …
Claude Shannon: The Man Who Turned the World into Bits and Defined the Future of AI
In 1948, a solitary engineer at Bell Labs published a mathematical paper that no one asked for. That document not only invented the concept …
The Hidden Economics of AI: What It Actually Costs to Run LLMs in Production (With Real Data)
Everyone talks about what AI can do. Almost no one talks about what AI costs to do. After more than 6 months operating autonomous agents in …
Devo: How a Self-Taught Chemist from Madrid Built the Data Engine That Defends the U.S. Air Force
When a phishing attack paralyzed one of Spain’s most innovative banks, a chemist-turned-security engineer identified the flaw the entire …