Rodri, that would definitely be an example of what I would be meaning, for the first question. Or, another one, computers. I know, why would I be thinking computers for a question like this? We're all dependent on them, and everything that they allow us to do. But, though they have shrunk and gained control of more functions that the first computers, we're addicted to the point, click, on/off, typing on keyboards of our PC's and laptops. I wonder why we haven't heard about the new, 'better than the computer' personal electronics.