 Parsimony methods were among the very first adopted by cladists. This is often taken to include Hennig (1966), who laid out a process of phylogenetic inference that is now referred to as “Hennigian reasoning” in his seminal text Phylogenetic Systematics (Baum &amp; Smith 2013). Like other forms of parsimony, this method sought to identify the tree that explained the distribution of homologies by appeal to the fewest number of evolutionary events.