translation.en: My favorite example is a pair of psychologists who did research on left-handers, and published some data showing that left-handers are, on average, more susceptible to disease, more prone to accidents and have a shorter lifespan.
translation.zh: 我最喜欢的例子 是两个研究左撇子的心理学家， 他们发表了一些数据，表明平均而言， 左撇子更容易受到疾病的侵害，更容易发生意外， 寿命也更短。