Scientists keep taking their own lives, and no one knows why. That's the central mystery at the start of 3 Body Problem, the new Netflix series based on a trilogy of sci-fi novels by Chinese author Cixin Liu. But it soon unfolds into something far grander: There's a mysterious VR video game, flashbacks to revolutionary China, shady billionaires, and strange cults. Liu's novels are beloved in China and have a smaller but similarly dedicated following among English-language readers, but they are hard science fiction--heavy on concept, light on character. More than once in the series, someone resorts to wheeling out a chalkboard to make their point, and there are scenes in the books that seem impossible to film: multidimensional structures collapsing in on themselves, a computer made up of millions of soldiers, nano-wires cutting through steel, diamond, flesh.

Early in "3 Body Problem," the new Netflix adaptation of Liu Cixin's acclaimed science-fiction trilogy, intelligent life from another corner of the universe decides that a spectacle is required to get humanity's attention. On a cloudless night, the stars brighten, then flicker on and off, as if a kid were playing with a light switch, transmitting a series of numbers. Two physicists--one high and thus mesmerized, the other terrified--watch the phenomenon from a Gothic courtyard in Oxford, England. The next day, the stoner, Saul Durand (Jovan Adepo), chalks the experience up to an elaborate hoax; the rest of the world also saw the stars twinkle in code, but the celestial blinks went undetected by Earth's most powerful telescopes. The otherworldly signal may have been a message just for Saul's companion, a nanomaterials researcher named Auggie Salazar (Eiza González) who's had a glowing countdown emblazoned across her field of vision for days.

The scientific method has guided the development of science over the last four hundred years. The method involves carefully recording observations, formulating a meaningful hypothesis, and rigorously testing the hypothesis. Based on the outcomes of these tests, the hypothesis is refined over and over again till it can explain the observations. Scientists are taught correlation does not imply causation. For them, it is not enough to know that something happens; they need to understand the underlying mechanisms that cause it to happen.