This monograph argues for a novel approach to split topicalization and quantifier float in German, based on the premise that syntactic structure-building proceeds solely via free application of Merge. Following recent developments in the pursuit of a more principled theory of syntax, it is argued that the stipulative notion of 'projection' ought to be dispensed with: syntactic objects created by Merge are not headed, and endocentricity arises due to a simple search algorithm. When this algorithm fails, specifically in symmetric {XP, YP} structures, an unlabeled constituent results; where a...