We have already seen for ourselves why
Justin Bieber is not a fan of revolving doors, but we've yet to understand his preference for non-moving stairs. Although a busy 16-year-old pop star like himself might prefer to get places faster—one of the perks of the 19th-century invention originally called "revolving stairs," which we now know as the escalator—Bieber seems to enjoy the extra exercise the original motionless vehicle allows. "I like escalators cuz when they brake they just become stairs," he
tweeted to his fans in March. Maybe he'd also like revolving doors if they broke and just became doors.