In the video, Gaurav Sen talks about the importance of consistency in distributed systems.
He gives an example of how likes on a post in a social media platform may not be immediately consistent across all nodes in the system, but it is still acceptable because it does not affect the overall experience.
He also explains how consistency can be ensured in financial systems through settlements and reconciliations, and how a sorted string table can be used to maintain a record of changes in the system.
Sen emphasizes that the level of consistency required depends on the application and the user's needs.