This episode contained a slight chronology error. In an early scene, McCoy says after giving Sarah April a tour of sickbay, "Jim, I didn't realize how many of the tools I use in sickbay were designed by Sarah." To which Sarah replies, "As the first medical officer aboard a ship equipped with warp drive, I'm afraid I had to come up with new ideas all the time." This clearly can't be true, since the Bonaventure, not the Enterprise was the first starship with warp drive installed. She must have meant something like she was one of the first medical officers aboard a ship with advanced warp drive installed.