Can imagining fake creatures help us predict the real future of life?

Health · Published 9 October 2026 Swipe more like this →

In short: Speculative evolution uses fictional biology to map out what might come next. By extrapolating current trends into the future, scientists can research how organisms might respond to ecological shifts. This is not just science fiction; it is a tool for visualizing the profound patterns of life.

Speculative evolution, also known as speculative biology or speculative zoology, is a subgenre of science fiction that explores hypothetical evolutionary scenarios. While it can involve entirely alien worlds, it often focuses on an alternate history of terrestrial life. This movement is frequently categorized as hard science fiction because it relies heavily on established biological principles to explore real-world processes like evolution, climate change, and zoogeography. This discipline often examines how lineages might react to sudden ecological transformations. It frequently utilizes fictional examples to demonstrate complex biological mechanisms.

The modern movement was catalyzed by Dougal Dixon's 1981 book, After Man. Unlike earlier science fiction tropes that often featured human-like aliens, Dixon's work explored a fully realized future Earth with over a hundred hypothetical animals. His work emphasized convergent evolution, where new species evolve to resemble unrelated predecessors. Dixon later expanded these themes in The New Dinosaurs (1988) and Man After Man (1990), the latter of which examined the effects of climate change over millions of years. These subsequent volumes explored diverse ecological themes, including zoogeography and long-term climate shifts. Such works helped establish the concept of creating entire, self-contained speculative worlds.

Beyond entertainment, the field serves as a powerful predictive tool. By projecting current biological trends forward, researchers can visualize potential responses to environmental shifts. The accuracy of these speculative models can be striking; for instance, in the 2013 book All Your Yesterdays, artist John Meszaros illustrated a filter-feeding radiodont named Ceticaris. Following this, researchers identified that the Cambrian radiodont Tamisiocaris functioned as a filter-feeder in 2014, prompting the establishment of a new clade, Cetiocaridae, to commemorate it. This phenomenon highlights the potential for artistic foresight to align with subsequent taxonomic discoveries. Such instances demonstrate how speculative models can mirror actual evolutionary patterns.

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