In Neal Stephenson's "Anathem" an analemma observed on an alien spacecraft leads the planet's inhabitants to speculate that the spacecraft is from ****** (not g

In Neal Stephenson's "Anathem" an analemma observed on an alien spacecraft leads the planet's inhabitants to speculate that the spacecraft is from ****** (not going to spoil it). https://en.wikipedia.org/wiki/Anathem https://en.wikipedia.org/wiki/Anathem