Modus inversus

Abstract

Background:

A true  conclusion follows deductively from true premises. However, what if the premises are not true? Therefore, certain aspects of the relation between premises and conclusions in valid arguments are re-investigated again.

Methods:

Methods of logical inference (modus ponens, modus tollens et cetera) were analysed again.

Results:

Reliable scientific proof methods are of use in order to identify as soon  as possible non-scientific claims  and to help authors not to suffer too long from self-contradictory and sometimes highly abstract, especially mathematical stuff.

Conclusion:

Modus inversus has the potential to prevent us from accepting seemingly contradictory theorems or rules in science.