In this episode, Will meets Kala, making him officially the first of the Sensates to meet all of the others. Will met Riley in episode 1, Nomi in episode 4, Lito in episode 5, Wolfgang in episode 6, Sun in episode 8, and Caphaeus in episode 10.
"Just turn the wheel and the future changes," is the episode title and what Kala says to Wolfgang. This line applies to many of the other characters in this episode as well.
The song Riley's father is singing when she's in the hospital is Baba O'Riley from The Who which ties in to what Sven called her in an earlier episode, Baby O'Riley.
Bug greets Nomi and Amita by saying, "Hello, Angels". This is an allusion to the first time we meet his character when he tells them that if they are forming some kind of Charlie's Angels group he wants in. Additionally, and famously, the eponymous Charlie, of the Charlie's Angels TV series and movies, began each of their conference calls with the same greeting.