The document discusses the changing landscape of TV viewing with the rise of connected TVs and second screens. It explores how traditional linear TV discovery has been a largely "lean back" passive experience, while internet discovery is more proactive. As content from the internet is pooled onto TV screens, discovery will need to bridge these active and passive modes. Successful electronic program guides of the future will seamlessly link the two discovery experiences, allowing viewers to switch between "lean forward" searching and "lean back" viewing with minimal disruption. The main challenge is designing for this change in consumer behavior.