Science grows like a weed every year. — Kary Mullis

Science grows like a weed every year.

Author: Kary Mullis

Insight: We tend to think of knowledge as something carefully tended and controlled, but Mullis nails something true: science doesn't grow the way a gardener plans. It sprawls. New discoveries create new questions faster than we can answer them. Each answer branches into five more. The metaphor of a weed is perfect because weeds are relentless, invasive, productive without permission—they don't wait for conditions to be ideal. This matters now more than ever because we live inside that explosion. A decade ago, we couldn't sequence a genome in days or run a language model on a laptop. The speed is disorienting, and it makes it harder to stay informed or to know which breakthroughs actually matter versus which ones are hype. We expect certainty from science, but the reality is messier: fast-growing, sometimes chaotic, constantly revising itself. The slightly unsettling part? A weed also means things can grow in directions no one intended or predicted. That's genuinely creative and powerful, but it's also why scientific progress requires humility. We can't control where the growth heads. We can only get curious about what keeps sprouting up.