2026
How Ads Really Get Chosen: Signals, Auctions, Pacing, and Measurement
A practical mental model for how signals become targeting decisions, auction scores, budget allocation, and conversion measurement.
From LLM to Agent: Why Token-In-Token-Out Is Not Enough
Walking from a raw LLM to a full agent system — RAG, tool use, MCP, skills, and the harness — as a series of engineering problems and the solutions that emerged to solve them.