A family ice cream trip, a forgotten PAAS parking payment, and the weekend project that came out of it: TeslaMate, MQTT, and Bratislava's open parking data.

Skip the percentage arithmetic — map scores to -100, 0, and 100, and let AVG() do the rest. A mathematical proof and practical ClickHouse benchmark.

Everyone thinks AI is replacing software engineers. But code was never the bottleneck. It was always ideas, judgment, and execution. Here's why agentic engineering matters more than vibe coding.