The rhetorical appeal of logos relies on the logic and reasoning the speaker’s credibility the recipient’s emotions the tragic heroine’s flaw

Logic and reasoning

Logos relies on logic and reading. The root word logo means word or speech. The speaker's credibility uses the appeal of ethos. By proving the source as credible, the speaker's message is seen as more valid. Pathos is the rhetorical appeal to the emotions of the audience. The tragic heroine's flaw when looking at the story structure of a hero's journey is considered hamartia.

21 balloons is the story of professor william sherman's travels.

in 1883, he set off from san francisco for a balloon ride over the pacific and was found a month later floating with 21 balloons in the atlantic ocean. this seemed an astounding feat and everyone wanted to know what had happened.    

professor sherman was loyal, however, and said he would tell his tale first to the western american explorers club in san francisco, of which he was a member. this built up suspense for several chapters before he began to tell of the wonders of his adventures and the amazing island of krakatoa, an island which had just been blown up by a volcano.  

the residents of krakatoa are all millionaires who live under a "gourmet government" of their own devising. we get to see all the incredible adventures that creative people with unlimited resources would create according to the author.