I know very little about search but what I love about how he looked at the graph element, exploring relationships between "entities". The relationships between

I know very little about search but what I love about how he looked at the graph element, exploring relationships between "entities". The relationships between entities in our world holds so much information and yet in most databases it's reduced to a join between tables. Mapping the relationship and capturing the "hidden" information and therefore making it available for use unlocks amazing potential.