Reasonableness is a characteristic of reason, that is, a fact will be reasonable, if it has valid foundations to support it. Reasonableness leans towards the use of reason, seeking to express an idea full of logic within an argument. When an approach is reasonable, it is because it is reasonable, that is, it has characteristics that make it sensible, acceptable or convenient.
Reasonableness is a quality that varies depending on the person, since each subject has their own point of view, of what is reasonable or not. Although there are a number of aspects that generally participate in reasonableness; some of them are:
- Validity of the approach: a proposal lacks reasonableness if it opposes the common sense of the rest. However, on occasions, the defense of common sense can present limits, since at certain times, the supposed common sense can be opposed to the truth. For example, in ancient times, man thought that the earth was flat and this idea had reasonableness and remained that way for centuries, since it was initially based on common sense.
- Consistency: an idea will not be reasonable if some principles of logic are not respected. In this sense, it can be said then that an approach should not have contradictions, for example if a person says that the play is tedious but at the same time, funny, this idea does not make sense, since it is illogical that something is entertaining and boring at the same time, except that the contradiction is explained in some way.
- It must be located within the legal context: for a proposal to present reasonableness, it must be within the law, that is, it does not refute the regulations already in place.
