#3008: Proterozoic Rocks
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[Cueball is seen at a distance, walking amid a rocky landscape.]
I love being near Proterozoic rocks.
These ones are 1.1 billion years old.
That's so, so old.
[Cueball standing next to a rock.]
Eyes evolved half a billion years ago. The first time a rock was ever looked at, these rocks were already 500 million years old.
[Cueball sitting atop a large rock.]
People say geologic time makes them feel small. But when I touch this rock, it's like I'm a part of it, spanning a vast abyss of time that stretches back as far as the eye can see.
[A completely black panel except for text in white lettering.]
And then 500 million years farther.
(Sourced from explainxkcd.com)
Title text:These rocks are from a time before eyes, brains, and bones, pieces of a land warmed by an unseen sun.