learned nothing, Stewie takes him back to 1999 again to try to prevent their past selves from telling any future events. However, this results in 50 incarnations of Stewie and Brian appearing to prevent them from telling the future, including a Brian and Stewie accompanied by their Peter, a Stewie who has developed female breasts, another Stewie and Brian trapped in barber's poles, one Brian and Stewie dressed up in banana outfits, and a Stewie whose has slit his Brian's throat. Having had enough, the first Stewie tells all of his and Brian's numerous future selves to take a vote on whether or not they should prevent 9/11, which results in the majority saying no. He then orders everyone to not foretell any future events and return to their respective times, which they do. From there, Stewie takes Brian back a minute before their past selves initially arrived, and forces them at gunpoint to return to 2011. After initial confusion results in the Brian that just arrived getting shot in the leg, they comply. With that, the altered timeline ceases to exist, along with its corresponding Stewie and Brian. Back in the present, the other Stewie and Brian, who is recovering from the leg injury, talk about the possibility of causing havoc during every time travel trip. They are thankful for not altering the present timeline until Peter arrives with his friends' 1999 selves to drink beer and watch TV. Production and development Series creator and executive producer Seth MacFarlane first announced the episode at the 2011 San Diego Comic-Con International in San Diego, California on July 23, 2011. MacFarlane notes in the DVD featurette that the episode was inspired by the Star Trek: Deep Space Nine episode "Trials and Tribble-ations". It was directed by series regular Dominic Bianchi, in his second episode of the season. Bianchi also previously served as director for the series's landmark 150th episode "Brian & Stewie". The episode was written by series showrunner and executive producer Mark Hentemann, who joined the show as a writer in its third season. Series regulars Peter Shin and James Purdum served as supervising directors, with Andrew Goldberg and Alex Carter serving as executive story editors, and Spencer Porter, Anthony Blasucci, Mike Desilets, and Deepak Sethi serving as staff writers for the episode. Composer Ron Jones, who has worked on the series since its inception, returned to compose the music