That was a bit too clever answer to my stupid question, I mean don’t know what any of this mean 
…and no need to explain, I’m not gonna dive that deep. But anyway, if I’m using some usual basic out of the box terminal that comes with Ubuntu for example, I can use several Terminals (terminal windows) to do different tasks, right? Is there an upper limit how many?
Even more off-topic: a friend of mine, a coder, is using blank keyboard, you know, no letters or any markings on the buttons. I guess many of you are too? Anyway that is an image that somehow condenses my view on the difference between the initiated and uninitiated when it comes to computers.