What Evolution, the Big Bang, and Neuroscience Actually Explained For Me

There's a specific kind of argument I used to find persuasive that I don't anymore, the idea that the sheer complexity of life, or the fine-tuned conditions of the universe, or the mystery of subjective experience, points toward a designer because nothing else could explain it. What changed wasn't that science suddenly explained everything, it hasn't, there are still real open questions. What changed is how much it does explain, and how consistently the trend has run in one direction over time.

Evolutionary biology gives a genuinely detailed, evidence-backed account of how complexity can emerge from simpler starting points through selection over long timescales, without needing a designer at any step. Cosmology has pushed the explanatory boundary for the universe's origins back further and further, each time closing another gap that used to be filled with "and then a creator intervened." Neuroscience, while nowhere near a complete theory of consciousness, has tied enough specific mental phenomena to specific physical brain processes that treating the mind as something entirely separate from the body has gotten much harder to justify.

I try to hold this carefully, because "science hasn't explained everything yet" isn't itself evidence for a supernatural explanation, that's just a gap, and gaps get filled by future research more often than by revelation. What moved me wasn't any single discovery, it was noticing that every gap religion once occupied has, over time, been explained by something else, and none of those explanations required reintroducing the supernatural once they were found.