In the 1930's, British philosopher Karl Popper proposed the idea that scientific theories could not be verified but only falsified. Popper also made a career out of attacking Marxism. Popper's notion of unverifiability is often appealed to today by those who attack the reliability of scientific knowledge. Michael Polanyi's 1958 book, Personal Knowledge, which extols the value of "tacit knowledge", "intuition", etc. is now very popular in academic circles among those who are against objectivity and rationalism. The book's introduction specifically states that it was written to oppose dialectical materialism. Some more recent attacks on rationalism are launched in the name of Marxism, revolution, Lenin, etc. Thomas Kuhn's notorious attack on the rationality of science is misleadingly called The Structure of Scientific Revolutions. Kuhn openly declares that science cannot give us reliable knowledge of the world, as well as implies that revolution does not lead to progress. Feyerabend, a modern American anti-rational philosopher, quotes Marx, Lenin, and the "Chinese communists" to defend his anti-science, anti-rational ideas. These include that the most productive scientific method is anarchy and that science differs little from myth. Feyerabend also uses the name of Lysenko in order to slander Stalin's leadership. Shawgi Tell University at Buffalo Graduate School of Education [EMAIL PROTECTED]