I think you're talking about how you want tipping to be. In the real world, it is often more a measure of folks unconscious bias than the worker's performance.

I think you're talking about how you want tipping to be. In the real world, it is often more a measure of folks unconscious bias than the worker's performance. It's also a great way for management to shift risks onto workers. [this might be the one time Uber does something that isn't designed to shift risk onto their employees]