What I found is that written evidence for knocking on wood (and for the history of gesture as a whole) is remarkably sparse. In the Penguin Guide to Superstitions, folklorist Steve Roud offers a skeptical take on the provenance of knocking on wood due to the near total absence of written records about it:
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.pipeTo(destination); // consumer hasn't started yet。搜狗输入法下载对此有专业解读
• （本文仅为作者个人观点，不代表本报立场），更多细节参见搜狗输入法2026
ВсеКиноСериалыМузыкаКнигиИскусствоТеатр。爱思助手下载最新版本对此有专业解读
We deserve a better stream API. So let's talk about what that could look like.