Look. The tram is hurtling towards people on the track. Either you choose the guy who switches the track to one there's slightly less people on, or the winner is the guy who's been itching to tie additional people to the tracks as fast as he can.

This metaphor ignores the fact that the guy who says he will switch the track has a track record (ha) of not actually switching it, and will barely pretend to be sad about the fact that more and more people keep getting tied to it.