How can uber company determine the effectiveness of rating their drivers by passengers? What if a driver happens to drive at night & unfortunately picks me up intoxicated who happens not to think or see clearly & I just hits the star button regardless which one. I just thick it's not fair to the drivers. Everyone have different views or opinion. Some can easily give a five or four star & some don't. For me three to four star is already a good rating. Five is perfect & no body is perfect. How can you use this star rating to determine your good drivers.