Is pain historically constructed? Is pain today the same as pain in ancient times? Is pain a universal human experience, true for all time, or does it change?

• 疼痛是随历史而演变来的吗?今天的疼痛和古代的疼痛一样吗?疼痛是否是一种举世皆同的人类共通经验?永远不变,还是会改变?