>>jsnell+(OP)
> The primary use case for Unix was to multiplex storage (the filesystem) and provide an interactive environment for humans (the shell) [2], [3]. In contrast, the primary use case of many contemporary POSIX-based systems is a service running on a machine in a data center, which have orders of magnitude lower latency requirements.
And yet the most pleasant development environment for producing the latter is going to be the former.