A British woman plays a piano designed especially for people who are confined to bed. Date: 1935. (Photo by Mary Evans Picture Library/Caters News)

Actress Athene Seyler attempts to contort her body, in a scene from the show, “Skin Deep”. (Photo by Sasha/Getty Images). Circa 1928

Roman Amoyan of Armenia, bottom, and Elman Mukhtarov of Azerbaijan compete in the the Men's wrestling, 59kg Greco-Roman Bronze Medal event at the 2015 European Games in Baku, Azerbaijan, Saturday, June 13, 2015. (AP Photo/Dmitry Lovetsky)

Old Heidelberg, Dog with Pipe, 1905. (Photo by Detroit Publishing Company)

A visitor tries a baccarat game at the Global Gaming Expo (G2E) Asia in Macau, China May 19, 2015. (Photo by Bobby Yip/Reuters)

Kazuo Hirai, President and Group CEO of Sony Computer Entertainment America, presents the Playstation Vita at the Sony Playstation media briefing on the eve of the Electronic Entertainment Expo (E3) on June 6, 2011 in Los Angeles, California. More than 45,000 people are expected to attend the annual three-day convention to see the latest games and announcements from the gaming industry. (Photo by David McNew/Getty Images)

Activists stage a theatrical play where gay people are restrained by others wearing masks depicting Russian President Vladimir Putin, during a protest against Russia's new law on gays, in central London, Saturday, August 10, 2013. Hundreds of protesters, called for the Winter 2014 Olympic Games to be taken away from Sochi, Russia, because of a new Russian law that bans “propaganda of nontraditional sexual relations” and imposes fines on those holding gay pride rallies. (Photo by Lefteris Pitarakis/AP Photo)