The Fermi Paradox as a Failure of Conceptual Reach

This perspective reframes the Fermi Paradox from a question about the prevalence of extraterrestrial life to a question about the structure of our observational and conceptual horizons. The argument is that an evolutionary system — including the technologies and theories it produces — inherits the biases and limitations of its developmental history. Our sensory modalities, our instruments, and even our explanatory frameworks are extensions of a single evolutionary lineage on a single planet. The absence of detected alien life is therefore weak evidence for the absence of alien life; it is stronger evidence for the Incompleteness of our theoretical apparatus.

The central claim is that a good explanation functions as a perceptual technology. Just as the microscope made the microbial world visible and LIGO made gravitational waves detectable, a sufficiently general theory of life would make previously unrecognizable forms of organization detectable. Without such a theory — one that captures the abstract physical principles any living system must satisfy, rather than merely cataloguing the features of terrestrial biology — we cannot design experiments or instruments sensitive to life organized through different chemical substrates, at different scales, or via different physical processes.

This connects to assembly theory and related efforts to characterize life in terms of combinatorial complexity and Causal Structure rather than specific molecular signatures. The Fermi Paradox, in this framing, is a symptom of civilizational youth. We are not yet deep enough in our own assembly space — not yet far enough along in the compounding of explanatory and technological capability — to perceive structures whose organization lies outside our current conceptual reach.