For what reason might scientists change the most current classification system?

Question

Quizplus · Accepted Answer

As new information about the evolutionary history of existing species becomes available, scientists may need to revise the current classification system to better reflect the relationships between different organisms. This could result in changes to the taxonomy of certain groups of organisms or even the creation of new taxonomic groups. Changes to the classification system based on the discovery of new species or the extinction of existing ones would likely be more limited in scope.

For What Reason Might Scientists Change the Most Current Classification