Nobody in this episode trusts anybody, which is reasonable, because Nolan is right about at least half of it. A character built on composure spends the climax losing it in the least composed way imaginable. The flashbacks are back, like an uncle who tells the same story at every dinner. The quote everyone will remember: "Soon you'll be feeling better than ever." For reasons the episode never fully explains, the problem keeps coming up. Reliable, like a well-made chair.