近年来,在民事和刑事案件中,一种被称为“系统发育举证”的技术广为使用:当一个人被传染某种病毒后,它能测出是谁传染的。虽然方法很有效,但仍需谨慎应用。西班牙瓦伦西亚沿海的小镇上,有一位叫胡安·马埃索(Juan Maeso)的麻醉师,平日里受人尊敬,背地里却有着卑鄙的一面。在过去至少10年中,他先后在两家医院,从给病人的麻醉药中,撇出吗啡给自己注射,再用相同的针头,给病人注射剩下的麻药。 In recent years, in civil and criminal cases, a technique called “phylogenetics” has been widely used: when a person is infected with a virus, it can detect who is infected. Although the method is effective, it needs to be cautiously applied. An anesthetist named Juan Maeso, on the coastal town of Valencia, Spain, was revered on weekdays with a vile assassination. For at least 10 years, he had given morphine himself in two hospitals, one after another, to the patient’s anesthetic, and then injected the patient with the same anesthetic using the same needle.