Follow-up to: Knowing About Biases Can Hurt People

See also: Fully General Counterargument (LW Wiki)

A fully general counterargument [FGCA] is an argument which can be used to discount any conclusion the arguer does not like.

With the caveat that the arguer doesn't need to be aware that this is the case. But if (s)he is not aware of that, this seems like the other biases we are prone to. The question is: Is there a tendency or risk to accidentally form FGCAs? Do we fall easily into this mind-trap? 

This post tries to (non-exhaustively) list some FGCAs as well as possible countermeasures.