It's a fundamental difference I think. Indeed the only thing that Siri and CLIs have is that they are non-graphical. This is actually the similarity that matte

It's a fundamental difference I think. Indeed the only thing that Siri and CLIs have is that they are non-graphical. This is actually the similarity that matters. In a GUI interface, you have to page through "commands" to find what you are looking for. In CLIs and Siri, you simply go straight to the command by typing or speaking. Programmers love CLIs because, after the initial cost of learning the commands, you can do things much faster than a GUI. But, speed of executing commands is less important on the desktop than on a phone, which is why I suspect most normal users don't bother to learn a CLIs. But when you're on a phone with trying to tell your boss you're running late while coming down a flight of stairs, Siri is going to come in real handy.