# Multi-version build + test (PG14–18)
Talking with devices via a custom protocol.
。业内人士推荐夫子作为进阶阅读
YouTube平均拿走约 20% 的引用份额，在 Google AI Overviews 里更是29.5% 的结果会引用 YouTube，并且“被引用次数”大约是其它视频平台的 200 倍；对照组里，Vimeo、TikTok 这种平台的引用占比只有 0.1% 左右，Twitch、Dailymotion 甚至基本不出现。
Picture two engineers on the same team. Engineer A gets assigned a feature. She looks at the problem, considers a few options, and picks the simplest. A straightforward implementation, maybe 50 lines of code. Easy to read, easy to test, easy for the next person to pick up. It works. She ships it in a couple of days and moves on.