Natives of the Solomon Islands have a peculiar method of cutting down big trees. They live away from civilization, so they don't have chainsaws and other equipment. Therefore they use a very special method to cut down trees.
For 30 days local shamans at dawn of every day go to the tree they selected and gather around the tree. Then they start to swear and yell at that tree. They curse it.
After 30 days the tree falls down.
This theory means that if we shout at another person,
swear at him
we kill his spirit.
Same goes to human being