“…Turning to optimisation-based theories, it is well-known that classic OT cannot generate many opaque maps (Idsardi 1998, 2000, McCarthy 2007, Buccola 2013) – as discussed by Baković (2007), OT analyses of non-gratuitous feeding and cross-derivational feeding are possible and straightforward. In response, many adjustments to classic OT have been proposed, including constraint conjunction (Smolensky 2006), sympathy theory (McCarthy 1999), turbidity theory (Goldrick 2000), output-to-output correspondence (Benua 1997), stratal OT (Kiparsky 1998, 2000, Bermúdez-Otero 2018), candidate chains (McCarthy 2007), Harmonic Serialism (McCarthy 2000), targeted constraints (Wilson 2000), contrast preservation (Łubowicz 2003), comparative markedness (McCarthy 2003) and serial markedness reduction (Jarosz 2014). See McCarthy (2007) for a review, meta-analysis and more references to these proposals.…”