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I imagine a culture, 10,000 years down the road, that reads from bottom to top. Wow, awesome, let's excavate one of these disease absorbing blocks!

Why not stick the waste in an old Uranium mine? Maybe our future descendants will be able to make good use of our radio active waste?

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The comic shows the tree has grown bigger in the final frame of the comic.

So they'll have to assume it shrinks trees as well as absorbing disease :)

It would never occur to me to interpret it that way, rather than him moving the block closer to the trees. Wouldn't it take a human life time for a tree to grow that much?

Depends on the type of tree. When I was a kid we got a tree cutting at some arbor day event and planted it in the backyard. By the next summer, the tree was as tall as our two-story house.

"Why not stick the waste in an old Uranium mine? Maybe our future descendants will be able to make good use of our radio active waste?"

That was my thinking too. The decision to label it as "waste" for the next 10'000 years seems so narrow-minded to me!

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