efficiency

Small Language Models (SLMs) run locally on phones and laptops, cost pennies to operate, and now beat much larger models on real tasks.

How LEDs turn electricity into light using semiconductors, why they're 10x more efficient than bulbs, and the Nobel-winning blue LED story.

How to automate repetitive tasks without code: pick the right tasks, estimate ROI with real arithmetic, build a first Zap, and keep it from breaking.

Carnot proved thermodynamic limits on engine efficiency. His theoretical work established the maximum possible efficiency any heat engine could achieve, a law of nature rather than a failure of engineering.