One of the problems of command-line interfaces is the lack of discoverability. But complex graphical applications can have the same problem.
Today I discovered how to burn an ISO image with GNOME. Right-click the ISO and choose write to disc. Couldn't be simpler. But I had to google it.
Incidentally, the ISO I'm burning is the first ISO I've ever burned. It's a system tools disc for Linux. I needed to whack a Linux partition from within itself, but couldn't because Parted of course won't touch a mounted file system. Sigh.
At least I found out that GParted is one sweet looking thing.