众所周知,人类社会的科技发展已经历了三个时代,或称三个里程碑:第一个里程碑是人类学会使用物质,如石器、铜器、铁器、植物纤维等;第二个里程碑是掌握了能源的使用,如煤、蒸气、电力、石油、核能、太阳能等:第三个里程碑则为人类进入使用信息的时代。当今,信息已成为一种包罗万象、无所不在的资源,已是社会发展、国家运转乃至个人生存的必要条件。人们不断制造大量信息,同时也自外周获得大量信息,并使用信息。医学信息是信息中的特殊类 It is well known that the development of science and technology in human society has gone through three eras or three milestones. The first milestone is that humans learn to use substances such as stoneware, bronzeware, ironware, plant fibers, etc. The second milestone is the mastery of energy The use of coal, steam, electricity, oil, nuclear energy, solar energy, etc. The third milestone is the era of human access to information. Today, information has become an all-encompassing and ubiquitous resource that has become a necessary condition for social development, the functioning of the country and even individual survival. People constantly make a lot of information, but also get a lot of information from outside and use information. Medical information is a special type of information