Chiara Marletto is a Research Fellow working at the University of Oxford. She researches foundational issue in physics. In recent research, she has worked on a new fundamental theory of physics called constructor theory, which is a generalisation of quantum information theory. For an overview of Marletto’s work, you can visit her website https://www.chiaramarletto.com Her research on constructor theory inspired her recently published book 'The Science of Can and Can't', which will be the topic of our conversation.