Common sense tells us that damaging a thing this old is somewhat easier to imagine than it is to accomplish—like invading Russia. The earth has suffered mass volcanic explosions, floods, meteor impacts, mountain formation, and all manner of other abuses greater than anything people could inflict, and it’s still here. It’s a survivor. We don’t know exactly how the earth recovered from these devastations, because the rocks don’t say very much about that, but we do know that it did recover—the proof of it being that we are here.