A revision of experience
However spontaneous such poems may seem, we know that a great many of them were the result of arduous toil…Issa is well known, in spite of his fluency and the large number of verses he produced, to have revised his poems over months and years, for instance, the following:
A huge firefly
This verse is the result of many revisions, but the final version appears artless and the work of a moment. This revision of verse is a revision of experience. The experience had matured in the words of the haiku so that he came to know what he should have wanted to say.