In general, non-structured essay does not follow the systematic presentation of ideas like introduction, key statement, supporting discussions and rationalization or conclusion.
The reason behind this can be traced to the origin of the word essay itself that it is a personal discourse of certain subject matter or the author’s ‘take’ on the issue bordering on commentary and the recollection of a certain issue or event.
In general, though formal essay writing exercises guard consistency, structure and order of the presentation of thoughts and non-structured essay focuses on variety of thoughts and point of view, both approaches remain faithful on the objective of interpreting an account, issues and stand point of the author.