In the book "Lock In" by John Scalzi, the character Tony expresses the challenges of a particular situation, emphasizing its complexity. He acknowledges the difficulty of the problem at hand but suggests that, despite its daunting nature, it remains theoretically achievable. This reflects the notion that in the realm of quantum physics, what seems impossible can still have a solution. His statement highlights the tension between reality and theoretical possibilities.

Scalzi weaves a narrative that intertwines science fiction elements with philosophical questions about the limits of understanding and achievement. Tony's comment serves as a reminder that the universe operates under rules that are often counterintuitive, allowing for the exploration of ideas that stretch beyond conventional limits. This blend of complexity and potential embodies the core themes present in Scalzi's work.