1-Duck Rule: If it walks like a duck, squawks like a duck and has feathers, it probably is a duck.
2 – Sherlock’s Rule: When considering a problem, remove everything from consideration which seems untrue. What is left is probably the truth.
3-Occam’s Razor: In considering a complex phenomenon with many factors and a variety of explanations, remember that the simplest explanation that accounts for the factors is probably correct.
4- Description is not advocacy. To confuse the two is an error born of a lack of objectivity in the observer.
5 - Objectivity is an absolute necessity for clear thought. Leave your political or other "baggage" behind when you seek truth.
5- Always consider items of information separately from their source. Even the worst source may produce information that is true. pl