When we boil down the nature of our existence, the only thing we can really do is make choices. Through this lens, we come to see that life resembles something like a game of plinko: every moment contains a choice that affects our future position. Thinking how this looks across time, our lives are vines which twist and turn at different junctures. Thus, the trolly question is not self-contained in the moment of pulling the lever. You, the agent with the choice, are the universe's decider: do we head to this future or that one? In this, there is no passive option. You are not choosing to save anyone: you are responsible for killing either one or five people and all the consequences thereof. Which future do you choose?