The road forward for systemd

I read the blog. In fact the author says:
<cite>
The idea is actually even older than launchd. Prior to launchd the venerable inetd worked much like this: sockets were centrally created in a daemon that would start the actual service daemons passing the socket file descriptors during exec(). However the focus of inetd certainly wasn't local services, but Internet services (although later reimplementations supported AF_UNIX sockets, too). It also wasn't a tool to parallelize boot-up or even useful for getting implicit dependencies right.
</cite>

I wrote that systemd is more powerful than (x)inetd, but the concept is the same.