Crime and Punishment the two halves of the novel, as David Bethea has argued, is organized according to a mirror-like principle, whereby the "left" half of the novel reflects the "right" half. The seventh part of the novel, the Epilogue, has attracted much attention and controversy. Some of Dostoevsky's critics have criticized the novel's final pages as superfluous, anti-climactic, unworthy of the rest of the work, while others have defended it, offering various schemes that they claim prove its inevitability and necessity. Steven Cassedy argues that "Crime and Punishment" "is formally two distinct but closely related, things, namely a particular type of tragedy
Punishment are many possible reasons that might be given to justify or explain why someone ought to be punished; here follows a broad outline of typical, possibly conflicting, justifications. One reason given to justify punishment is that it is a measure to prevent people from committing an offence - deterring previous offenders from re-offending, and preventing those who may be contemplating an offence they have not committed from actually committing it. This punishment is intended to be sufficient that people would choose not to commit the crime rather than experience the punishment. The aim is to deter everyone in the community