Hello, you aliens!

In the absence of newspapers, I went to my home library to read up on the designs created on the Nazca Plains in Peru, which were charted for years and years by Maria Reiche after the war.
    Why did I do this? To get a clue to the mentality of neighbours who have enormous light shows in their back garden, which much look very impressive from space, just like the Nazca lines, but not as much from ground level.