Minimalism and the Design of the Language Faculty
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Minimalism and the Design of the Language Faculty Iain Jerome Mobbs Downing College April 2015 This dissertation is submitted for the degree of Doctor of Philosophy University of Cambridge © Copyright Iain Mobbs 2015 Minimalism and the Design of the Language Faculty Iain J. Mobbs SUMMARY This dissertation explores the cognition underlying the knowledge, use, and acquisition of human language: the faculty for language, or language faculty (FL). In particular, it examines the validity and utility of the set of related, but logically independent, proposals comprising the argument of linguistic Minimalism (LM). These proposals define an atheoretic research program for linguistic enquiry, the Minimalist Program for Linguistic Theory (MP) (Chomsky 1993), as well as introducing specific claims about the status of linguistic variation and the FL’s broader role in human cognition. Chapter 1 defends the existence of a coherent subject matter for ‘biolinguistic’ enquiry of this kind. Chapter 2 attempts to clarify those Minimalist proposals which comprise the MP, and to present their compulsory logic; it offers an explicit, if partial, framework for Minimalist research, based around principles of algorithmic science. Chapter 3 argues for the validity of the substantive hypotheses of LM; in particular, it defends the largely ancestral nature of humans’ conceptual-intentional apparatus and proposes a particular characterization of permissible syntactic variation, introducing a novel analysis of discourse pro-drop as part of the argument. Chapters 4 and 5 examine the evidence for the implication of Minimalist notions of optimality and ‘interface conditions’ in the design of the FL. In doing so, these chapters offer new suggestions regarding the motivation for lexical categories, phase-based spell-out (Chomsky 2001), and abstract Case. Chapter 6 focuses on the status of the parser in LM, suggesting that parsing relies heavily on computationally- optimized cognition and defending a close relationship between syntactic grammar and the parser. The chapter goes on to motivate a (limited) parsing-based account of the linearisation of abstract syntactic structure and to offer an explanation for the Final-over-Final-Constraint (Biberauer, Holmberg & Roberts 2014). Chapter 7 suggests that we think about language acquisition in terms of parsing with an over- complete grammar, rather than as determining the settings of an under-specified, defective grammar; this allows us to fill a major lacuna in Yang’s (1999 et seq.) well-supported, variationist model of language acquisition (shown to be interpretable as the reflex of a domain-general principle of data analysis). The chapter also proposes that diachronic evidence of ‘conservative’ acquisition (e.g. the prevalence of grammaticalisation, “featural economy” (Clements 2003), and the gradual relaxation of the contexts for phonological rules) plausibly reflects concern for optimality in the process of acquisitional parsing. On the other hand, the prevalence of analogical forces in language change is presented as the footprint of ‘liberal’, computationally-constrained data analysis, attested in acquisitional tasks across cognitive domains. Chapter 8 begins with an account of the evolutionary origins of non-referential, conceptually “promiscuous” lexical meaning, and it goes on to suggest that the machinery grounding lexical semantics also affords our capacity for metaphorical thought, our rich theory of others, and our reflective nature (sometimes called ‘the human condition’): it argues that the FL is even more intimately related with what it means to be human than already assumed. Chapter 9 concludes. i DECLARATION This dissertation is the result of my own work, and includes nothing which is the outcome of work done in collaboration with others, except where specifically stated in the text and acknowledgements. This dissertation is not substantially the same as any submitted for a degree, diploma, or other qualification at the University of Cambridge, or at any other university or similar institution. This dissertation is 79,975 words long, including all footnotes, references, and appendices, but excluding the bibliography. ACKNOWLEDGEMENTS I’ve been given so much help, by so many people, that I can’t establish the distance to appreciate it any more. I do realise I’ve been unusually lucky though, and that I need other people. Language really isn’t built for expressing gratitude, but it’ll have to do. Ian Roberts and Theresa Biberauer have been wonderful supervisors: they got me interested in linguistics, and every time I speak to them I become more interested. I remember Theresa’s first lecture very clearly – understanding for the first time that ‘knowledge’ is something produced and insisted on by people, rather than a series of epiphanies. I guess that’s what you call making a discipline come alive. The first time I met Ian, as a first-year undergraduate, was when he troubled to introduce himself to me; that first impression has been persistently reinforced. After years of their supervision, I occasionally feel able to work on my own, but I always (nervously) want to know what they think – because it’s worth days of my fumbling – and they invariably spare the time to let me know, in the most constructive way. (The usual provisos apply about the content here of course.) They have been very supportive in the ways that matter most too: I’m deeply grateful. The Department of Theoretical & Applied Linguistics at Cambridge is quite a disparate entity, but many extremely clever and decent people study, teach, and work in it. Bert Vaux (possibly without knowing) gave me a new perspective on many issues in linguistics: in particular, he helped me realise that you can study language in a number of different ways, with a number of different interests, and do so without contradiction: a pretty fundamental point, but often missed. I have also learnt a great deal from him about assessing the value of claims in terms of their predictions. James Clackson (actually a member of the Faculty of Classics) was my first DoS at ii Jesus College and allowed me to change course from Natural Sciences to Linguistics; I suspect many other DoSes wouldn’t have been so supportive and I will always be much indebted. I’m also very grateful to Francis Nolan: for his early support as the Head of Department when I first started linguistics, and for allowing me to study part-time early in my PhD. He also supervised my first attempt at independent research and immediately made me feel like I had every right to try. Michelle Sheehan has never formally taught me, but every time I’ve sat in a room with her she’s said something to me think harder. She’s also been very kind in answering questions, sending me papers, explaining her thoughts, etc.: showing me that the idealized notion of academic dialogue is possible. Jenneke van der Waal (again, possibly without realising) always reminds me that linguistics involves attention to languages, all of which are born equal, and so not to put theory before data. What’s more, her obvious sincerity and empathy always lift my spirits. I’m also very aware and appreciative of the support given by the department’s non-teaching staff, particularly: Ulrike Balser, Alison Bingham, Siobhán Carew, Rachel Deadman, Ariel Knapman, and Louise Radok. Life would have been very much harder without them. There has always been a number of intimidatingly bright (and humble) students in DTAL at any given time, and it’s been a privilege to be allowed to learn with/from them. Alison Biggs, Neil Myler, and George Walkden are all obviously exceptional (though they wouldn’t think that way of themselves), and I’m not remotely surprised by their early success. I like them all enormously and wish them all the very best of luck; if there is a ‘field’, with an overarching interest in addressing linguistic questions, it would do well to invest in them. (I’m not certain there is, but fortunately they are talented enough that it won’t matter.) Many others, whose thinking I’m not so familiar with, have enriched supervisions, seminars, reading groups, etc., and made for great company, including: Alastair Appleton, András Bárány, Tim Bazalgette, Alice Corr, Chi-Hé Elder, Chris Lucas, Elena Pala, Joe Perry, and Jeffrey Watumull. Emma Game was more or less the only linguistics student I had to talk to as an undergraduate, and although she left Cambridge six years ago, I still catch myself hoping she’ll be in the library. Beyond its work, I don’t know the linguistics community outside Cambridge particularly well. I have sent a lot of e-mails asking questions though, and received a lot of very helpful replies. Regarding the content included here, I’m very grateful for replies received from: Marijke de Belder, Matthew Dryer, Richie Kayne, Andrea Moro, Andrew Nevins, Luigi Rizzi, Bridget Samuels, Halldór Sigurðsson, and Charles Yang. Again, the usual provisos apply. Noam Chomsky also replied very helpfully to several e-mails, which, again, I’m very grateful for. I know he has no liking for veneration, but this is my acknowledgements section and his work has made a big impact on me. It’s not just that his arguments are beautifully reasoned and that his iii conclusions are fascinating, but that they show an honest and humble approach to enquiry: there isn’t any dissembling or ego in his work, nor any of the nervous arrogance or ‘goal-hanging’ of so much academic work. It’s just someone thinking really hard because they choose to, reporting what they didn’t learn as well as what they did, and never concealing the contribution of others. That’s hard not to admire. It’s easy to see why Chomsky’s contribution is resented, and how people become trapped in their instinctive opposition, but the amount of work dismissing his conclusions without ever engaging with his arguments is plain embarrassing.