Magic.
Modern linux distributions are doing many things in a way that is, at best, surprising and, at worst, undebuggable.
"Any sufficiently advanced technology is indistinguishable from magic" comes to mind quickly.
Working with Linux in the 90s was surely not as easy as it is today, and probably for the better. But I also find myself longing for the old days at times. Examples are lack of NetworkManager (like lack of Bridge support in the version on my laptop, no clue if it's been fixed upstream, I'm using distro packages) or certain hald/dbus automagic things. And no, I won't go into details and that can be held against me, but there frustrations and annoyances - surely partly to be blamed onto me and partly to the software. Coming from that, I feel with the author.
Then again I'm also glad I don't have to wade knee-deep into config files every time I want to change something. :)