I’m a bit confused. Perhaps it’s outside the scope of what you’re discussing, but Time Capsule is designed to be a network (is router the correct term here?) for Time Machine, isn’t it? Would it be more accurate to say that Time Machine without a Time Capsule is not designed to work over a network? Or that Time Machine is not designed to work with NAS?
Somewhat veering away from the current subject (NAS) that had veered away from the thread topic (Six Lessons…), I have used a Time Capsule to be what I believe a Network Attached Storage is. In short, I used the Finder to mount the Time Capsule hard drive, saved something to it, and retrieved it from a different computer. Is this good, bad, or indifferent? (It certainly would have been faster to save the material to an external drive and carry it to the other computer, but that’s not the question.)