 Second, the new attitudes toward discordance and reticulation in phylogenetics provide an example of a community of scientists shifting from one set of commitments to another. Haber (2019) offers a specific example. He describes one of the entrenched core commitments in phylogenetic methodology as being the goal of “resolving” competing phylogenetic trees (Felsenstein 1988). That is, in cases where different analyses or data are generating conflicting phylogenetic trees, the goal should be to resolve this conflict by identifying which of those trees is best supported. On a model that recognizes genealogical discordance, though, conflicting trees may accurately reflect a reticulate or discordant phylogenetic history, e.g., if different data strongly support different phylogenetic trees, one possible explanation is that we have discovered an instance of discordance. Nakhleh (2013) recommends that this entails that phylogeneticists must now also consider whether conflicting trees may be “reconciled” rather than resolved. Haber (2019) argues that this is an example of what he calls a “productive disruption”, which is one way that science might advance.