Jackman also watched a woman undergo brain tumor surgery and was shaken to see the woman have similar blond hair to his wife: "All I could think of was my wife on that table. As much as I'd read the script and theorized and practiced philosophy, I knew in that moment that I was so not ready for death." For his various characters, the actor assumed a different posture for each persona. As the conquistador, Jackman was upright and forward-leaning to evoke an unstoppable nature. As the scientist, the actor hunched over with a dedicated focus on his character's work, being weighed down by the "world on his shoulders." As the space traveler, Jackman practiced the state of zen but also exhibited a continued persistence in his endeavor.