Perfect Imperfection: First third of progress is a science fiction novel published in 2004 by the Polish science fiction writer Jacek Dukaj, ostensibly as the first part of a planned trilogy. It was published in Poland by Wydawnictwo Literackie.

Jacek Józef Dukaj is a Polish science fiction and fantasy writer. His fiction explores such themes as alternate history, alternative physics and logic, human nature, religion, the relationship between science and power, technological singularity, artificial intelligence, and transhumanism. He is regarded among the most popular Polish contemporary science fiction authors.