translation.en: We know from three different studies on three different types of pain that a saltwater injection is a more effective treatment for pain than taking a sugar pill, taking a dummy pill that has no medicine in it -- not because the injection or the pills do anything physically to the body, but because an injection feels like a much more dramatic intervention.
translation.zh: 针对3种不同的痛症的3个研究显示 盐水注射比食用糖丸对痛症更有效 糖丸里头根本没有药－ 并不是说注射或者药丸对身体有任何物理影响 而是因为感觉上注射是一种更强力的手段