 As a result of these various factors, the significant intellectual and social trends of the past few centuries, together with the significant developments in philosophy, all have had an impact on the content of arguments and methods of argumentation in philosophy of education—Marxism, psycho-analysis, existentialism, phenomenology, positivism, post-modernism, pragmatism, neo-liberalism, the several waves of feminism, analytic philosophy in both its ordinary language and more formal guises, are merely the tip of the iceberg.