Probably because he is demonstrably insane. No one else hears what he hears. His obsession with killing the old man is also evidence of his insanity. As someone who is not in touch with reality, what he has to say is therefore of dubious reliability.
They have much in common both being unreliable and mad. But to the differences. In the Cask of the Amontillado the narrator is angry and bent on revenge. In the tell-tale heart the narrator is sincere and acts our of paranoia.
First person He's unreliable.
The narrator is the killer. They are the same person.
Yes the narrator of 'The Tell-Tale Heart' is insane - likewise the narrator of 'The Cask of The Amarillo' although not quite badly. However all Gothic literature doesn't have to have an insane narrator. in fact the majority of Gothic literature has perfectly sane narrators in a gruesome world.
The narrator fears the neighbors will hear the beating of the old man's heart.
Other than the title, The Telltale Head being a play on The Telltale Heart the similarities lie in The Telltale Heart having the narrator, who is presumably the murderer, being haunted by the sound of the victim's beating heart. Bart, who is also the narrator of The Telltale Head briefly, is haunted by the voice of Jebidiah Springfield.
First person narrative with an unreliable (nay mad) narrator.
The Tell-Tale Heart begins with the narrator insisting that they are not insane despite their meticulous planning to murder an old man who they claim has an evil eye. The narrator's obsession with the old man's eye drives them to commit the crime.
The narrator in "The Tell-Tale Heart" is unreliable, obsessed, and has a distorted sense of reality. He is consumed by the old man's eye and his guilt manifests in his heightened sensitivity to sound. His unraveling mental state ultimately leads to his confession of the murder.
They have much in common both being unreliable and mad. But to the differences. In the Cask of the Amontillado the narrator is angry and bent on revenge. In the tell-tale heart the narrator is sincere and acts our of paranoia.
The story is told in first person point of the view; the murderer is the narrator and begins the story by repeatedly saying that he is not crazy for killing an old man with a weird eye (an innocient man).
The narrator of "The Tell-Tale Heart" comes across as unreliable, neurotic, and consumed by guilt and paranoia. His obsessive behavior and erratic thoughts create a sense of unease and tension for the reader.
First person He's unreliable.
Poe's narrator in "The Tell-Tale Heart" is an unreliable narrator. He claims to be completely sane but his erratic behavior and obsession with the old man's eye suggest otherwise. His irrational decision to murder the old man because of his eye color and his eventual confession due to imaginary noises demonstrate his lack of credibility.
he claims he can hear stuff in heaven and hell? apex yeah he's crazy i know.
From the perspective of a man who has committed a crime
It would be helpful to include the excerpt from "The Tell-Tale Heart" in order to provide an accurate response.