Syntax or nothing: Some theoretical and empirical remarks on implicit arguments
<p>I show that core implicit subjects in Spanish (i.e., the ones that occur with analytical passives, impersonal <em>se</em>, and causatives) can be derived from a theory under which absence of <em>Merge</em> in external subject position is a possible syntactic output. Core implicit arguments then have no syntactic representation (<em>pace</em> Landau 2010). Absence of <em>Merge</em> can make to arise two different scenarios: (i) a conflict at the interfaces, which requires the implementation of some repair strategy, (ii) no conflict at the interfaces; i.e., a legitimate object at the interfaces. The first scenario is illustrated with reference to the so-called impersonal <em>se</em> in Spanish, and the second one with reference to analytical passives. The proposed system is able to capture a set of very intricate facts that does not have a satisfactory solution hitherto. Crucially, this particular view on implicit arguments, together with a purely syntactic theory of argument structure, derives the full distribution of impersonals and reflexives in <em>hacer</em> ‘to make’ causative contexts. Finally, it is shown that the arbitrary readings that the two scenarios above described display have a different source: whereas impersonal <em>se</em> requires (costly) default computation at the interface, arbitrary interpretations in analytical passives are calculated at the <em>v</em>P level. </p>