The universe is 13.8 billion years old, but recent James Webb data shows galaxies that seem fully formed just 300 million years after the Big Bang. That's earlier than our standard model of cosmic evolution allows. I've spent years reading cosmology papers, and this tension makes me wonder if dark matter and dark energy—which supposedly make up 95% of everything—are just placeholders for physics we haven't figured out. Do you think our current cosmological model is fundamentally flawed, or will we patch it up with tweaks?