Electronics retailer Best Buy has posted online sales exceeding $1 billion for three consecutive quarters, exemplifying an economy that continues to gravitate toward the Internet. At the same time, online-only retailers have been investing in short-term physical locations to sell their wares. What does this two-way trend mean for the future of retail? Over the last few decades, there has been a large-scale shift in the economy. Consumers no longer need to travel to get the goods they need. Now...