人类社会物质文明发展的六个时代

人类社会物质文明的发展经历了不同的阶段（时代），它们应当如何划分是一个重要而有趣的问题。根据本文所提出的划分人类社会物质文明发展阶段的标准——典型材料，人类社会物质文明的发展，至今历经了石器时代、青铜器时代、铁器时代、钢铁／水泥时代、硅材料时代。而从新世纪开始，人类进入了纳米材料时代。文章用大量事实和充足的理由，论述了人类物质文明发展这六个时代的具体内容，大致划分的时间、以及为什么做这样划分的理由。从而使我们对于人类物质文明的发展，有一个明晰看法。

On dividing development stages of human substance civilization into six ages

The development of substance civilization in human society has gone through and passed various stages How to divide them into respective ages is a very important and interesting subject. We have proposed a standard with the typical materials for such dividing. According to the standard, the stages of substance civilization of human society have gone through the Stone Age, the Bronze Age, the Iron Age, the Steel/Cement Age, and the Silicon Age. At the beginning of the new century, the substance civilization in human society has entered into the Nanoma- terials Age, which indicated that a complete new substance civilization of human society has started. This is the so called six age theory. The contents of the six ages, the time for dividing respective ages, and why this kind of divi- sion of ages should be done, are analyzed and discussed using a large number of facts and plenty of reasons from various aspects in the paper. In such a way, a clear vision for the development of substance civilization in human society would be coming out. Therefore, the authors show their opinions obviously about this subject, and their goal is to cause discussing this subject broadly and deeply, so as to get a rather unite understanding about it.