clipped from: www.positiveatheism.org   
How Thinking Goes Wrong

Twenty-five Fallacies That Lead Us
to Believe Weird Things

1. Theory Influences Observations

2. The Observer Changes the Observed

3. Equipment Constructs Results

4. Anecdotes Do Not Make a Science

5. Scientific Language Does Not Make a Science

6. Bold Statements Do Not Make Claims True

7. Heresy Does Not Equal Correctness

8. Burden of Proof


9. Rumors Do Not Equal Reality

10. Unexplained Is Not Inexplicable

11. Failures Are Rationalized

12. After-the-Fact Reasoning

13. Coincidence

14. Representativeness

15. Emotive Words and False Analogies

16. Ad Ignorantiam

17. Ad Hominem and Tu Quoque

18. Hasty Generalization

19. Overreliance on Authorities

20. Either-Or

21. Circular Reasoning

22. Reductio ad Absurdum and the Slippery Slope

23. Effort Inadequacies and the Need for Certainty, Control, and Simplicity

24. Problem-Solving Inadequacies

25. Ideological Immunity, or the Planck Problem