The Inca scribes (known as armantus) used the quipu (knotted ropes) to record and store information about the immense holdings of the vast Inca empire.

印加抄写员们利用结绳文字记载辽阔印加帝国大量财产的资料。

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With the government claiming ETA was on the ropes, the group was known to have wanted to pull off a spectacular to show that it still counts.

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Tethered to a large helium-filled balloon, the 23-pound Sword, as it's known, was able to climb up and down the long cable while workers kept the balloon steady with guide ropes.

ENGADGET: Space elevator robot reaches 1000 feet