What television gets to do, and there's a reason why 'S.H.I.E.L.D.' works as well as it does, is that it deals with the relationships. It deals with the very small, interpersonal ways that people both love and hate each other.

This quote is talking about why the television show “S.H.I.E.L.D.” is popular and successful. It is because the show focuses on the relationships between the characters, both their loving and hateful behaviors. This is important because it shows real human emotion and connection, allowing viewers to relate to the characters. It also helps to draw in viewers and make them interested in watching.