Phylogenetic reconciliation is like a game that scientists play to figure out how different organisms are related. In this game, scientists look for similarities between different organisms, called their "genes". By looking at these genes, they can build a family tree of these different organisms and figure out how they are related - if two organisms have the same gene, they must be related. Scientists then look at how the genes have changed over time and compare them with other organisms. This helps them figure out which organisms share a more recent common ancestor and which have been more distantly related for longer.