Editing Argument from ignorance (section)

==Related terms==

=== Contraposition and transposition ===
[[Contraposition (traditional logic)|Contraposition]] is a logically valid rule of inference that allows the creation of a new proposition from the negation and reordering of an existing one. The method applies to any proposition of the type "If A then B" and says that negating all the variables and switching them back to front leads to a new proposition i.e. "If Not-B then Not-A" that is just as true as the original one and that the first implies the second and the second implies the first.

[[Transposition (logic)|Transposition]] is exactly the same thing as Contraposition, described in a different language.<!-- Citation *not* needed, covered in the Wikilinked page -->

=== Null result ===
''[[Null result]]'' is a term often used in science to indicate ''[[evidence of absence]]''. A search for water on the ground may yield a null result (the ground is dry); therefore, it probably did not rain.