Pickering s theory of mangle emphasizes the performative aspect of scientific knowledge,which is a temporally emergent result during the game between material agency and human agency,and then Pickering deems the theory posthumanism.

Pickering thought that concept practice is one of the most important types of science practice studies, and we could also find the dialectic of resistance and accommodation in the mangle of concept practice.

Forbearance,collision,breakthrough ——The survival law of Feng Jiachang s in The Light of the Cities;