The quote came from an essay titled "Real Patriots Ask Questions," which Sagan co-authored with Ann Druyan, his widow and frequent collaborator. What's Undetermined Because of the nature of the ...

The Slippery Slope Argument is an argument that concludes that if an action is taken, other negative consequences will follow. For example, “If event X were to occur, then event Y would (eventually) ...

Welcome to 2011! I'm honored that TNC has invited me back to kick off the week and the new year with my favorite merry band of reader-commenters in all of Internetland. For those of you who didn't get ...

In an era of “post-truth” and “truthiness,” it can be hard to defend the common-sense belief that reality exists independently of how people think about it. Skepticism about reality comes in many ...

Scientist and educator Carl Sagan once said, "The cure for a fallacious argument is a better argument, not the suppression of ideas." Rating: Mostly True (About this rating?) What's True: The quote ...