Merge and Features: The Engine of Syntax1

Since the inception of the Minimalist Program, Noam Chomsky has increasingly pushed the boundaries of a minimalist conception of grammar, one that pares the mechanisms specific to language down to the bare bones. In addition to the structure-building operation of Merge, grammar involves some mechanism for feature interaction. Chomsky has explored several different varieties of a mechanism AGREE responsible for these kinds of feature interactions, for example feature matching, feature valuation, and feature movement, as discussed in this chapter. The Minimalist Program leads to the question of whether Merge could be sufficient for narrow syntax. Actual implementations of even simple grammatical descriptions of real natural languages always appear to require more than Merge, but this chapter explores some of the ways in which various different mechanisms might be reduced to Merge, in the spirit of the Minimalist Program.