These justifications can be:
- the logical premises of the argument;
- thematic variations of the argument (examples of justifications for βWestern Europe is in declineβ: βWestern Europe is in demographic declineβ, βWestern Europe is in economic declineβ and βWestern Europe is in cultural declineβ);
- studies, testimonies and other factual elements that corroborate the argument;
- the general principles underlying this argument (examples of justifications of βThe universe has a first causeβ: βMatter cannot exist by itselfβ, βAn infinite past is impossible β and βThere cannot be an infinity of causesβ).
Each justification is the subject of a specific page which sets out its reasoning, its own justifications and its possible objections. Making the justifications explicit in this way makes it possible to deal separately with each of the elements of the reasoning on which the argument is based.