The Bridge is not always possed of an other side. Crossing is all that matters.

A Bridge is literally a bridge through space and time.

A Bridge is a hallway

A Bridge has no allegiance to either side.

The Field is an orphan without the master.

A Field is something like a game wherein agents, in competition with others to gain the stakes, adopt strategies (including the strategy of redefining the value of the game and its rules).

A Field is mainly about the struggles over the value and relevance of different types of capital, and the prestige, privilege and power assigned to different positions in the field.

The Field is logical space carved out in which to put compulsions in order to render them harmless. We render compulsions useful by giving it the right to assert itself in a definite field.