What if, instead of putting gravestones, we plant trees on graves instead?

Wouldn't that be spectacularly wonderful? In a few years it's going to become a forest!

Each tree would also be memorable as all of them will be representing a faithful departed one. For generations to come, those trees shall be the memories of the past as well as the sustenance for the future. We won't have to worry about trees disappearing from our world anymore since we humans shall replace them with this brilliant fashion. For every person, there's a tree filled with memories. And for every tree, the future's memory is safeguarded.

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