FRANKFURT AM MAIN, GERMANY - OCTOBER 20: A visitor experienced a fantastic world with VR glasses the 2016 Frankfurt Book Fair (Frankfurter Buchmesse) on October 20, 2016 in Frankfurt am Main, Germany. The 2016 fair, which is among the world's largest book fairs, will be open to the public from October 19-23. (Photo by Hannelore Foerster/Getty Images)
