The API allows blaming the right cog in the machinery. Now everyone gets a Get Out Of Jail Free card because they can blame the kernel, filesystem drivers, user

The API allows blaming the right cog in the machinery. Now everyone gets a Get Out Of Jail Free card because they can blame the kernel, filesystem drivers, userspace libraries, application developers, disk controllers, and whatnot, and thus nothing forces a single direction in that cyclic graph of blame.