Skepticism in Science has Grown

In 1982, polls showed that 44 percent of Americans believed God had created human beings in their present form. Thirty years later, the fraction of the population who are creationists is 46 percent. In 1989, when “climate change” had just entered the public lexicon, 63 percent of Americans understood it was a problem. Almost 25 years later, that proportion is actually a bit lower, at 58 percent. The timeline of these polls defines my career in science. In 1982 I was an undergraduate phy...

 Marxism and Freudianism are Not Science

The difficulties connected with my criterion of demarcation (D) are important, but must not be exaggerated. It is vague, since it is a methodological rule, and since the demarcation between science and nonscience is vague. But it is more than sharp enough to make a distinction between many physical theories on the one hand, and metaphysical theories, such as ' psychoanalysis, or Marxism (in its present form), on the other. This is, of course, one of my main theses; and nobody who has not unde...