A field is a two dimensional space.
Fields are not usually seen as cubic or spheroid.
A Contextual Field is a three dimensional space of infinite size.
The two dimensions of a field are its length and its breadth that determine its acreage.
The three dimensions of a contextual field are its space, its time and its reality.
It is the reality of a field that gives it context and determines it to be a contextual field.
The two dimensions of space-time, time & space, produce the 3rd dimension of reality or context.
Without space or time there is no reality, no context and no field.
In a two dimensional field, the space is within the boundaries of the field.
In a 3 dimensional field, space is one of the boundaries.
Space is a boundary that is infinitely expandable over the eternity of time and the continuum of reality.
A Contextual Field of space-time-reality has three dimensions of infinity, eternity & continuity.