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The Logic Of Scientific Discovery is one of the books that revolutionized scientific thinking and it has exerted its influence on scientific methodology over the decades. Summary Of The Book Science, it is said, is precise knowledge. Scientific theories are arrived at after systematic experiments and also based on observation and inference. In The Logic of Scientific Discovery, the author examines the methodologies of scientific discovery in detail. It was first published in the 1930s, originally in German. The book covers the subject in ten main chapters. But, that is only half the book. The remaining part of it contains an extensive appendix section, covering additional aspects of scientific study. The main content is divided into two parts. The first part provides an introduction to the logic of science. This is covered in two chapters, one on the survey of some fundamental problems and another on the problem of a theory of scientific method. From the third chapter begins the second part, Some Structural Components of a Theory of Scientific Experience. This part covers the concepts of scientific theories, falsificationism, the problem of the empirical basis, and the degrees of testability. The second part continues covering other aspects of scientific statement and theory, such as simplicity and probability. It then discusses quantum theory. The final chapter focuses on corroboration, or how a theory stands up to tests. The idea of falsificationism is the author’s basic requirement for all scientific statements. He asserts that the only true knowledge is scientific knowledge and that the growth of knowledge depends on the testability of that knowledge. To put it simply, he asserts that all scientific statements must be precise and unambiguous. For example, the statement that 'most ravens are white' is not a scientific statement. A scientific statement needs to be assertive and very precise such that it leaves itself open to be disproved. For instance, the statement 'there are no white ravens' can be viewed as a scientific assertion because the discovery of even one instance to the contrary, the existence of a single white raven, can prove the theory to be false. The Logic Of Scientific Discovery is considered one of the most influential scientific treatises written during the twentieth century and it still remains one of the most widely studied books on science. About Karl Popper Karl Popper was an Austrian born British philosopher and professor. Other books by Popper include Conjectures And Refutations and The Open Society And Its Enemies. His books were on social and political philosophies and on scientific methodology. Popper was born in Vienna in 1902. When he was young, he was inspired by Marxist ideologies and was a part of the Social Democratic Workers' Party of Austria. Later in life though, he converted to the ideal of liberalism. Popper earned a Doctorate in Psychology. In 1937, he was offered a lecturer's position at the Canterbury University College in Christchurch, New Zealand, and he moved to that country. Later, he emigrated to England. Popper soon joined the faculty of the University of London, where he became the Professor of logic and scientific research. He is regarded as one of the leading philosophers of science, of the twentieth century.