It varies, 15% in california would be considered low, and you would never know why the waiter made that weird face. It is weird in taxis. And what is the proper

It varies, 15% in california would be considered low, and you would never know why the waiter made that weird face. It is weird in taxis. And what is the proper etiquette in a bar? And what kind of bar? A bellboy? More generally, however, a 'tip' is supposed to be an arbitrary amount out of someone's good heart. The fact that it is a preset amount, and you need a calculator, is weird and time-consuming. Again, it may not look so from the inside. My assumption is that it's a relic from a time when workers were uneducated and by default rude. It really seems like an ancient thing nowadays.