translation.en: And indeed this is actually true for most scientists as well So if you think about it, a geologist can't tell you whether a vaccine is safe.
translation.zh: 事实上在专业领域之外， 对于大多是科学家来说也是这样。 所以就算你想知道一个疫苗是否安全， 一个地质学家也不能告诉你答案。