 The reticulation and genealogical discordance generated by hybridization, HGT, ILS, and other complexities stemming from the structure and processes involving biological lineages have, historically, been obscured by idealizing assumptions in phylogenetics. In many cases treating phylogenetic trees as idealized models of genealogical history is useful and appropriate for the research question at hand.  Figure 1  offers a good example of this. This reflects how the level of resolution relative to our research questions can drive the way we use phylogenetic tools (O’Hara 1993).