Ludwig Wittgenstein changed everything. To understand how, we need to understand what he did to the subject of critical reasoning. Wittgenstein didn't leave us "philosophy"; he left a pathway for a more perspicuous intellect. This was caused by a psychological condition that made him meticulous and hypersensitive. He could abnormally perceive three natural phenomena: (a) the social traits implicated in word use; (b) the task-functions signified in communication; and (c) the pictures that flash before the mind's eye. With this unique acuity, he showed us how post-analytic thinking was to occur. And this discovery changes everything. It revolutionizes how we must argue with one another and what we believe is "true.

" Instead of focusing primarily upon premises or facts, we must point people to how their intellect behaves during a speech act--something called "therapy." And this has radical implications for analysis, conceptual investigation, value judgments, political ideology, ethics and even religion. This book is both an explanation of, and a blueprint for, the new critical thinking. Written for both a lay and special audience, and for all fields of study, it shows what Wittgenstein invented and how it affects us all.