What is poetic truth?

Poetic truth 

Poetic truth is the universal element in human nature and in human life expressed by the poet in his poetry. According to Aristotle, the function of a poet is to relate what may possibly happen according to the law of probability and necessity. By 'probability and necessity, he means the principle of natural causation. The events described should be such as are possible in real life. A poet has to present events in such a way that there appears a logical connection between them. There should be a sense of inevitability about the incidents as presented. Each incident or event should lead logically to the next. The incidents together then form a coherent whole. This logical connections of the incidents give to it a 'universal truth.' As poetry is an imitation of the poet's idea of life, poetry becomes ideal, and thus universal.