What stuck out to me was the fact that they killed each other when they lost their Light. Freezing to death over and over on alien terrain knowing that you may or may not wake up was definitely part of it, but I couldn’t help but wonder if their exposure to the Darkness in a more pure form accelerated their descent into madness. And then to have the Drifter come back from that only seeming moderately crazy, I think the Darkness could have psychological effects on wielders of Light, possibly only temporary ones. I don’t know how many spinfoil hats are needed for this one, but there ya go.