“The mind is like the parachute, only it works when it opens”
Wherever possible there must be independent confirmation of the facts.
Encourage substantive debate on the evidence by knowledgeable proponents of all points of view.
Arguments from authority carry little weight (in science there are no “authorities”).
Spin more than one hypothesis – don’t simply run with the first idea that caught your fancy.
Try not to get overly attached to a hypothesis just because it’s yours.
Quantify, wherever possible.
If there is a chain of argument every link in the chain must work.