What's happened today may look funny for many, but if you think of it, it's rather sad and shows what's the end goal here. Yesterday someone rang my doorbell, I mean my number at the entrance of the apartment building, which we call interphone, but it's also called intercom. Turned out it was the representative of the gas company, doing checkups every two years, which is mandatory. There's a whole procedure you need to respect, among which you need to have your central heating checked by the specialist, which is also mandatory every two years. These are things you don't want to miss, if you want to be safe.