The housing market continues to defy gravity. Sales of existing homes rose more than 10% last month compared to a year ago, hitting their highest level since December 2006. It’s all about low interest rates and intense competition for available homes. And now, more than ever, people are relying on online platforms to search for — and even buy — houses. And that opens the door for artificial intelligence to play a bigger role, like using computer vision to create real estate listings based on photos. Amy Scott speaks with Christopher Geczy, a professor at Wharton who teaches about real estate and insurance technology.