The “Knocking on Wood” Wikipedia page mentions Roud’s conclusion, and this claim of a 19th century origin has circulated online as the final say on the matter. If you go back to the original, though, Roud’s proposal actually ends on an ambivalent note: “Before this theory [of 19th century origins] can be finally accepted, however, an examination of the history of European forms of this custom would be advisable.”
Detection is via allocating a slice of zeroed memory, in our case a gigabyte, and then once per minute going through to ensure they're actually all zeroes. Magic!
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Глава офиса Зеленского захотел «развалить Россию»Буданов: На территории России должно быть создано несколько государств，推荐阅读搜狗输入法2026获取更多信息
garbage? Maybe we can allocate those on the stack?