The sentence "this is a blank formatted diskette" (sampled from an Ensoniq Mirage), which can be heard in the introduction of the song and later on, refers to this problem and was kept in the finished product.

[1] "Sans logique" was widely played on French radio during the year of its release[2] was one of the top ten songs that yielded the most copyright royalties to the Société des auteurs, compositeurs et éditeurs de musique in 1989.

[3] Shortly after the single's release, the European Workers Party used a still from the video, where Farmer has white eyes and the horns on her head, with the subtitle "These people promote ugliness and drugs!

[1][4] The song deals with a kind of schizophrenia[5] or dissociative identity disorder, which lives in the character that Farmer portrays, and also makes reference to religious concepts (angels and Satan)[6] to explore the two opposite sides of one person.

[7] The calculating Marquise de Mertreuil (a character in the French epistolary novel Les Liaisons dangereuses), as both angelic as diabolical according to her own interests, seems to be evoked in the lyrics.

[11] It was a Requiem Publishing production, filmed over the course of three days at a studio in Arpajon in the Île-de-France région, France, where the video for "Que mon cœur lâche" was also shot three years later.

Farmer plays the "bull", as her hands are tied behind her back and iron horns are put on her head, and is thus forced to fight a torero who is her lover.

The men take off their jackets and behave like toreros, and as Farmer runs through their coats like a raging bull, her lover puts a sword in her back.

Then, with her eyes rolled upwards and seemingly possessed by a demonic spirit, Farmer charges one last time and impales her lover with the iron horns on her head, fatally injuring him.

[12] According to Instant-Mag, "Sans Logique" is without a doubt "one of the most beautiful videos of the singer: percussive images, multiple references, many interpretation, rich symbolism".

[13] According to French magazine Top 50, the video manages to "marry dead, mournful, tragedy with music for discothèques", "by dint of symbols, sophisticated decors and subtle union of beauty and unhealthy.

[18] For biographer Violet, all the people belong to the same community, the bullfighter was unfaithful by impregnating a pregnant woman seen in the video, and Farmer "wears horns" literally as she has been deceived by her lover, and ultimately takes revenge by killing him.

[23][24] Farmer, nominated for the Victoires de la musique, has won the title "Best female performer of the year", but refused to sing "Sans logique", which was very criticized by the media.

Awaited by fans since 30 years, "Sans Logique" was performed in her Live 2019 just after the opening song "Interstellaires", without choreography but in a version rearranged by the musical director of the show, Olivier Schultheis.

With simple words, Farmer evokes the passage of the state of living to that of death through a description an ill-person in the process of dying in a hospital room, and the injustice felt in this kind of situation.