Trolly problem
Isn't killing/not killing Dyson the Trolly Problem, but on a much grander scale?
Over the years, as a kid/young man, I've always thought of myself as noble as John in this situation: Killing Dyson is wrong, no matter the consequences. I may have fooled myself.
Given the potential outcome of killing Dyson.... Now as a grown man, I have to admit I probably pull the trigger. I don't even think I'd hesitate. The morality is definitely still up for debate....
But I take Dyson out, no question.