you don’t realize fully the value of something till it’s no longer there, two examples, the tiny buttons on my Siemens cell phone to access the main menu and the contacts… of course the phone works even without them but… (a longer story on Siemens customer support to be released maybe soon, watch out this space…) and the cleaning of railway station… you never notice too much if they’re clean or not as you may do today where due to a strike all stations and trains are a mess.