字符、符号与 Unicode 的奇迹（Computerphile）

Tom Scott explains for Computerphile how Unicode and UTF-8 grew out of messy older character encodings to become the web's standard. It covers why the design works and how it handles worldwide text.

Why HN likes it: HN treats it as the go-to short explanation of UTF-8, praised for making the topic stick.

“a wonderful, terse, very informative video describing how utf-8 encoding works and why”