An investigation of how tribalism affected the evolution of the human mind. The analysis reveals a process that beliefs are a primary means of group identification and are a natural component of the evolution of human thought and culture. The results are mental processes that divide population groups into "us" and "them" which result in methods of thought and perception that affect major areas of human culture, specifically politics and religion. Us Against Them argues that the essential difference between the religious/conservative and the secular/liberal is driven by tribalism, not...

The most up to date vacuum tube design book currently available. Packed with information...Loaded with projects...Nothing like it anywhere Join Transcendent Sound's Bruce Rozenblit as he takes you on a journey from the basics of tube circuitry, through advanced designs. Tubes and Circuits is a condensed engineering manual that teaches the theory and operation of vacuum tubes-as well as circuit design. In addition, five projects are included that you can build. Projects provide step-by-step design procedures, equations, schematics, parts lists, and photos to assist the hobbyist in...