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:
В России допустили «второй Чернобыль» в Иране22:31
，详情可参考体育直播
На шее Трампа заметили странное пятно во время выступления в Белом доме23:05，详情可参考搜狗输入法下载
15:50, 3 марта 2026Силовые структуры