Adaptations of older science fiction novels are hard. Here’s why the latest Foundation twist is so pivotal and why it’s also straight from the mind of Isaac Asimov. Spoilers ahead for Foundation Season 3’s “The Shape of Time.”Written by Eric Carrasco and Foundation showrunner David S. Goyer, “The Shape of Time,” as usual, features several overlapping plot developments at once. We’re a little over halfway through Season 3, and the Mule is moving swiftly to take over planet after planet. As science fiction critic James Gunn (not that James Gunn) pointed out in his 1982 book on Asimov, The Foundations of Science Fiction, he claims that the Foundation stories deal with the notion of determinism, but also, paradoxically, are anti-deterministic.