Pradeep Parmar visited several stores in Northern California for an observation lab assignment in October 2012. He observed details of the stores he had never noticed before like cracks in floors and lighting. He found that overall ambience and lighting can impact how long customers stay, but pricing also matters. For example, one busy store had unpleasant smells but attractive prices. The assignment revealed opportunities for stores like capitalizing on local events to increase customer time spent, as one store broadcasting a baseball game was busier. It also identified a potential business opportunity to hire people to shop for the 20-30% of customers who seemed focused on missions or lists.