Over one million selfies are taken each day. According to Samsung, selfies make up 30 percent of the photos taken by people between the ages of 18 and 24.
Selfies featured in this episode were taken by and showcase crew members who work behind the scenes on "Criminal Minds."
Eric Hoffer, whose quotation opened the episode, inexplicably lost his sight between the ages of seven and fifteen.
Justine Ezarik, who also goes by iJustine and was mentioned by Riley in the episode, was a guest star on Season Six's "Middle Man."
Ice Bucket Challenge
The 2014 ALS Ice Bucket Challenge, referenced by Callahan in the episode, raised $100 million, largely due to its strong presence on social media. More than 300 million donors participated in the challenge, raising fund by 3,500 percent over donations made the previous year.
Ian Nelson, who plays William Pratt, was the District Three tribute in “The Hunger Games.”