Elton Marques has a PhD from the University of Lisbon, with a thesis on ‘eternism’ and ‘determinism’. The author has two post-doctorates from the Federal University of Rio de Janeiro and teaching experience at the University of Lisbon, the Portuguese Catholic University, and the Federal University of Rio Grande do Norte. Specializing in the philosophy of time, the author's research and publications also cover topics linked to his main theme, such as the history and philosophy of science, time travel, the ontological status of space and time, fatalism, the problem of free will, the problem of contingent futures, Occamism and other solutions to contingent futures, the debate between substantivists and relationalists, the relationship between time and the concept of infinity, the philosophical consequences of theories of relativity, the relationship between determinism and laws of nature, philosophy of technology, etc. He currently teaches at the Federal University of Rio Grande do Norte, participates in events in Brazil and abroad, and continues to research the above topics.