The Great Filter that stops aliens from reaching us might be two specific mathematical bottlenecks in the evolution of life and language.
Many theories suggest that civilizations go extinct due to wars or natural disasters before they can travel the stars. This new framework argues that the real barriers are actually algorithmic milestones that are incredibly hard to cross. The first bottleneck is the very origin of the genetic code, and the second is the emergence of complex symbolic language. These are not just lucky accidents, but structural hurdles in how information is organized by living systems. If this is true, the universe may be empty not because of bad luck, but because the math of evolution is stacked against the rise of intelligence.
Algorithmic bottlenecks in evolution: Genetic code, symbolic language, and the Great Filter hypothesis
arXiv · 2605.04498
The Great Filter hypothesis proposes that the emergence of technological societies capable of interstellar travel depends on a small number of exceptionally hard and highly improbable steps. Traditional versions of this hypothesis enumerate such "hard steps" along the trajectory from inanimate matter to complex technological societies, but diverge in their explanations for why these particular steps should be so improbable. The theory of Major Evolutionary Transitions also faces challenges in id