Pitts pragmatic analytical philosophy of technology uniquely studies technology from the relationship between technology and society. His definition of technology and technical interpretation of technological failure involve excessively the factors beyond technology. The technical reasons for Hubble Space Telescope (HST) failure, for instance, were explained specifically from the perspective of logical analysis by introducing three-valued logic. In technical interpretation there are deficiencies of corresponding principles, which should be replaced by atomic structure-functionon in the mode of technical interpretation from structure to function. Such a technical interpretation is of significance to deductive reasoning, which is named Reichenbachs technical logic. Whats more, Pitts definition that technology is “humanity at work” is too broad, whereas technology is the practice capacity of reasoning and technical artifacts call for continuous testing.