Virtual reality (VR) is unlike any other media in a number of ways. After spending a lot more time with VR myself the past few weeks, I've been reminded of one of the key differentiations: comfort is paramount. It's certainly nice to have decent back support or a plush pillow when reading in bed, to have a great couch when watching Netflix on TV, or to be seated anywhere but the front row when watching a movie in the theatre. But these comforts are somewhat ancillary to a particular medium: nice to have, but we aren't severely impacted by lack …