Inaction is not an option in these Trolley Problems
The trolley speeds towards the switch, which was left halfway between the two tracks, which will cause the trolley to derail, killing the individual on one track, and the five on the other track, and you, and everyone on the trolley. You have just enough time to throw the switch one way or the other so that the only fatalities will be either the one or the five. Who do you save and who has to die?
One five-year-old child or five 100-year old people?
One baby or five clones of the same baby?
One human or five robots with such advanced a.i. that they are indistinguishable from sentient self-aware humans with thoughts and feelings?
One mosquito or five rapists?
Jack Black or all five Backstreet Boys?