From Alistair Fraser, Whanganui, New Zealand
As an ordinary reader trying to make sense of the universe before breakfast, I was delighted by your feature on quantum causality. The idea of “causal bubbles” gave me a way to picture the quantum world without feeling out of my depth (29 November, p 36).
By chance, I had just finished your article on the ancient origins of sperm (29 November, p 11). It struck me that these two stories – one probing the deepest structure of reality, the other tracing the machinery that eventually produced all of us – sit together beautifully: the same quantum rules shaping electrons also shape the proteins powering our earliest ancestors. For once, physics and biology felt like they belonged to one big cosmic whakapapa (lineage).
