Quite. No matter how you spin it, a hammer and a chisel will not be as precise as the carvings at Puma Punku.
Just because they weren't created with hammer and chisel doesn't mean that they were made by aliens/with the help of aliens.
What about the The Antikythera Mechanism? The Giant Stone Balls of Costa Rica? The Baghdad Batteries? All found here
I'm not necessarily saying it's proof of alien contact, I'm usually very skeptical when it comes to that stuff. I'm simply stating how crazy these things are, how could they have been made? I have no answer. And I don't buy the "answers" of others.
I went back in time just to troll a bunch of people to make a big fuss about it. I also got drunk with stalin and accidentely got in a bar-fight. He thought i was a bougeis thinga ma bober and began the red purges just to find me. Stupid georgian cristian educated elites with their horny looking mustache's lol.
A computer designed to calculate astronomical positions, Art, Devices used for galvanization/storage vessels for scrolls.