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In this work, we summarize and critique the paper "Understanding SAT is in P"by Alejandro S\'anchez Guinea [arXiv:1504.00337]. The paper claims to present apolynomial-time solution for the NP-complete language 3-SAT. We show thatGuinea's algorithm is flawed and does not prove 3-SAT is in P.

A Refutation of Guinea's "Understanding SAT is in P"