I think XoX descibe this best:
internal = abstract meaning
external = concrete, 'obvious' detail\measurement
Also:
object = well defined entity (with form + boundaries) - something which can be changed with reference to its enviroment.
field = borderless construct - 'it goes beyond the horizon' - the site (the environment or context) at which events happen over a period of time (involving objects).
dynamic = the passive observation of objects (the observation of trends in objects)
static = the active manipulation of objects, with little awareness of the context
In Ixxjs, the 'active manipulation of objects' is actually the setting up of experiments in the mind in order to evaluate the importance\value of external objects - although it happens in the field, hence the 'external\internal statics of fields' - there is little reference to time\contextual factors - these are the constants of the experiment. However, the evaluations are carried out over a period of time.
In Ixxps, external objects happen to them (they are passive), rather than their own conscious manipulation (experimentation) of the object - these are imprinted and recorded in their 'internal\external dynamics of fields'. They see things as trends because they can remember the way objects were arranged at certain points in the past - they see things repeating themselves by seeing a particular arrangement, and thus know when to act (they are active because the time is right, and not because they have arranged the objects themselves).
Exxjs are able to gather the appropriate information needed for a situation very quickly, as the data gathered through

or

comes straight from their environment at that particular time - the information is largely uncritical, not analysed over time as with

or

. As they are dynamic, they know what happens when objects are in certain arrangements (their context), and so they also know which information is appropriate to gather from the environment (without necessarily finding out the validity of the information - they estimate when a particular situation is going to arise, and seek to improve on last time).
Exxps are able to see the way objects in the present should be straight away, because they are static - they have already determined the power\potential of objects, and thus seek to implement this.