Why it is so difficult for Apple dev team to maintain consistent naming of their APIs? The function is called fatalError(_:file:line:) The corresponding Loogger.Level is called critical. Why not fatal? Is Ali Ozer still working at Apple to kick the a*s of new developers? I do not assume that either the function or the log level will be renamed. But I hope someone will take care of details (in the future). P.S. I am developing on NeXTStep since 1990. There were times when APIs were so consistent, one could guess them almost 100% correctly. It will benefit the community if this would be true today as well.