How to Avoid Taxis

Gray: I hate being bullied into tipping, and think they're overpriced as it is. When you go to do the payment though, it comes up on the screen - how much would you like to tip? How about 10%, 15%, 20%. Or it says other amount. And then there's also another button that's cancel. So I hit cancel to say I don't want to do a tip. But what that does is it cancels the whole transaction. Gray: It requires way more effort to put zero-tip in than to actually do a tip,. Like, you know, when they like opting out of promotional emails, do you not want to not receive emails? Right