RoboTimbo
Hostile Nanobacon
Archer:
First off, before we apply the concept to ufology, let's examine your assertion that you can't give credence to something just because it's not something else.
Not only is your assertion illogical, it is also untrue. Logic dictates that if something is not a part of one set, then it cannot be something within that same set. Therefore it must be something else. Let's begin with some familiar examples:
Consider the art and practise of gold panning. A process of screening and observation is used to remove what isn't the gold and concentrate the sample down to where only the nuggets remain. Similarly coin sorters screen coins by their individual properties. Gravel screens do the same thing by removing what isn't from what is. Data can be similarly screened to eliminate a wide range of irrelevant information. For example, if we take a sample of 10,000 people and are lookiing for only 25 year old females, we can just as easily remove the ones who aren't to get the information as we could look for the ones who are. Using Boolean operations, you can run a data searches for things that "don't contain the words" just as easily as you can search for things that do. Lastly, we have the process of Deductive Reasoning:
From Wikipedia:
Deductive reasoning, also called deductive logic, is reasoning which constructs or evaluates deductive arguments. Deductive arguments are attempts to show that a conclusion necessarily follows from a set of premises or hypotheses. A deductive argument is valid if the conclusion does follow necessarily from the premises, i.e., if the conclusion must be true provided that the premises are true. A deductive argument is sound if it is valid and its premises are true. Deductive arguments are valid or invalid, sound or unsound, but are never false nor true. Deductive reasoning is a method of gaining knowledge.
Consequently your assertion that such thinking does not represent critical thought is in error. The process is widely used and recognized. It may or may not provide proof, but that isn't rellevant to the point you had made. It is still most certainly a form of critical thinking. Therefore when it is being used, regardless of the subject matter, it cannot be maintained that mere "non-critical acceptance" is taking place.
If you don't agree, please state your reasons.
Then why do some UFOs [using your definition] later turn out to be mundane?