In his post Van Arsdale lists nine principles from Carl Sagan that comprise a "Toolkit for sceptical thinking." These are from Sagan's book, "The Demon-Haunted World: Science as a Candle in the Dark." These are great precepts, and they neatly describe my own epistemology.
Smith, Michael E.
2015 How can Archaeologists Make Better Arguments? The SAA Archaeological Record 15 (4): 18-23.
n.d. Social Science and Archaeological Inquiry. Antiquity (in press).
And if you want to see Carl Sagan in some wild and wonderful videos, check out the mash-ups by Melody Sheep. I especially like this one. Whoop Whoop......