It was standard procedure to do invasive surgeries on newborns without anesthesia until the 1980s, on the theory that they can’t feel pain. https://hms.harvard.

It was standard procedure to do invasive surgeries on newborns without anesthesia until the 1980s, on the theory that they can’t feel pain. https://hms.harvard.edu/news/long-life-early-pain https://hms.harvard.edu/news/long-life-early-pain