SN-2222 已核对来源，附原文与上下文。
无符号 int 能撑到 2106 年。到那时网络肯定至少得彻底翻新一次。
unsigned int is good until 2106. Surely the network will have to be totally revamped at least once by then.
不应该存在任何有符号 int。如果你在哪发现了有符号 int，请告诉我（请趁未来 25 年内），我会把它改成 unsigned int。
There should not be any signed int. If you've found a signed int somewhere, please tell me (within the next 25 years please) and I'll change it to unsigned int.
