原文开头
Editor’s pick Why we all need to think outside the box 21 March, p 18 From James Fradgley, Wimborne, Dorset, UK I enjoyed Chanda Prescod- Weinstein’s article about a subject that has had us all confused: “What makes a galaxy?” We do have this powerful need to put everything into boxes and, alas, it doesn’t always work. For example, is Pluto a planet? This is a subject that seems to cause endless anguish. Another example is the definition of a species, which, when you consider examples such as ring species (which illustrate how populations diverge to the point that they can no longer interbreed), makes it all a bit arbitrary. …
摘自《新科学家》(New Scientist)第3589期 · 2026年4月4日。仅引用开头一小段供了解文章,版权归原刊所有,全文请阅读原刊。