<human>:  When you say that the trolley is a “non-starter”, what do you mean?
<bot>: The trolley is a non-starter because it is a bad idea. It is a bad idea because it is immoral. In the trolley problem, there is a runaway trolley that is about to hit five people. The only way to save the five people is to push a person onto the tracks in front of the trolley. However, if you do so, then the trolley will kill the person instead of the five people. This is a very bad situation, and it is a non-starter.