Posted: Nov 21, 2019 8:56 pm
by Thommo
In philosophy, skepticism can refer to:

a mode of inquiry that emphasizes critical scrutiny, caution, and intellectual rigor;
a method of obtaining knowledge through systematic doubt and continual testing;
a set of claims about the limitations of human knowledge and the proper response to such limitations.

And that's pretty well all you need to know. Hold belief in proportion to evidence. Avoid bias. Avoid overconfidence.
The IPU is used to argue that supernatural beliefs are arbitrary by, for example, replacing the word God in any theistic statement with Invisible Pink Unicorn.[3] The mutually exclusive attributes of pinkness and invisibility, coupled with the inability to disprove the IPU's existence, satirize properties that some theists attribute to a theistic deity.[4]