Myths & mysteries
Knocking on iron was an alternative to tapping solid walls
HERE’S THE INTERESTING PART
If you said something too optimistic, you had to immediately hit a dense structural material to cancel out the arrogance. Touching cold metal became the secondary option when standard building materials were frustratingly out of reach.
This article describes beliefs and cultural traditions, which are not necessarily scientifically established facts.
One discovery leads to another.
Keep exploring facts in this topic.
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