Although Paro was not designed to be a sex robot specifically, Paro is an example of how intelligent machines could become a suitable therapeutic option. Some manufacturers have also argued that their introductions into prisons may reduce prison rape and sexual tension in prison. Prison inmates suffer from both separation from their partners and the limited possibility of gaining such a partner in prison, and they often turn to sexual harassment and the threat of rape as a result. Scholars like Oliver Bendel suggest that sex robots could be the solution to establishing sexual health and diminishing sexual tensions beyond in prison. Manufacturers have also suggested sex robots may alleviate sexlessness in encumbered professions such as long-haul truck drivers or all-male oil rigs. Sex robots can also help avoid problems of unwanted pregnancies, sexually transmitted diseases, and sexual violence, which would be issues in brothels and with prostitutes. Attempts at realization There are ongoing attempts to make sex dolls socially interactive. In 2010, a sex doll called Roxxxy, that had the capacity to play back pre-recorded speech cues, was demonstrated at a trade show. In 2015, Matt McMullen, the creator of the RealDoll stated that he intended to create intelligent sex dolls with the capacity to hold conversations. Barcelona-based Dr. Sergi Santos developed a sex robot named Samantha; the robot can switch between a "sex mode" (which can include Samantha simulating a female orgasm) and a "family mode", in which it can also can tell jokes and discuss philosophy. In 2017, Matt McMullen created a sex doll called "Harmony", which has the capability of learning about the personal preferences, wants and desires of the owner. Furthermore, Harmony can smile, blink and frown in a nearly human-like fashion. She can hold a conversation, tell jokes, remember food preferences, and the names of the owner's siblings. The cost of Harmony is said to be roughly $15,000. During an onstage interview with Engadget in 2018, Matt McMullen demonstrated that the skin on Harmony's face could be peeled off and replaced with different skin. He subsequently added a different colored wig and changed her personality by using the app on his handheld device that controls the robot. He named this sex doll "Solana" and considers it to be the "sister" of Harmony. Also in 2017, Chinese company AI Tech released a sex robot named "Emma" that could talk in both English and Chinese. Emma