The theory of sci-tech evolution supposes that there is a basic contradiction between the normality and the abnormality, which can be found generally in the human social development.

• 摘要科学技术演化论认为人类社会发展普遍存在一个基本矛盾-“常态”与“非常态”的矛盾，“装”与“备”是解决这个基本矛盾的一种重要方式和途径，“装”与“备”本质也是演化的。