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(NOTE: Due to how late this review is coming in—consult this post for why—I'll be trying to keep discussion short and succinct. Sorry!)
With every passing episode, Season 3 opens up more and more questions. Last episode, Final Space seemed to make the bold announcement that we've hit the point of no return, the point where serious shit starts to happen and hearts begin to break, and "All the Moments Lost" continues its trend with another tantalizing dose of drama and some of the season's most challenging developments yet.
There are two major components of "All the Moments Lost," but the most immediately striking is Quinn, whom much of the episode is devoted to. She's an interesting character; as I've talked about in the past, for how much Final Space is built around her, she's exercised so little agency due to the stakes of its narrative. Season 1 was all about building trust before cruelly snatching her away, while Season 2 stranded her, forcing her to incubate in Final Space. This season is the first time that we can really see the character coming into her own and getting a truly strong focus, and "All the Moments Lost" is her boldest episode yet, placing the dark undercurrent surrounding her character to the forefront.