Shopping is a big part of the holiday season: We go downtown or to a packed mall, browse the store windows, smell the chestnuts roasting in the street. The pandemic has obviously changed all this, but some retailers like Gap, Ted Baker, and Ralph Lauren are trying to deliver that experience through our computers. Marielle Segarra recently clicked through a virtual tour of Ralph Lauren’s Beverly Hills store and talked about the virtual storefront experience with Joe Turow, a professor at the University of Pennsylvania and author of the book “The Aisles Have Eyes.”