Originally Posted by
Tom
Actually, it is the Fi.
Fi is the "internal statics of fields", or the "unquantifiable aspects of relationships".
When Fi is used to make judgements, the person using it will use their previous emotional "snapshot", if you will, to determine their relationship with the person they have/had an issue with. This "snapshot" follows no set of physical rules, and is, therefore, utterly a subjective reasoning based upon a split-second, memorable emotion that the Fi-user held. This strong feeling will not pass, but become an "emotional rule", so to speak, that the Fi-valuer will follow with conviction. While this doesn't have to be a feeling of hatred, or even a bad thing at all, it is memorable and unquantifiable, allowing someone who uses Fi most of the time to base their actions off of it.
This can lead to unfailing loyalty, hatred, depression, etc.; it becomes very difficult to make an Fi-base forget these emotional "rules" they have created; it would be like asking an LII to forget that trees are made of wood (very like, as a matter of fact).
The reason that ESIs tend to show "grudge-behavior", I would think, is due to Ni (as opposed to Si). Ni is the internal dynamics of fields, and Si is external; this, I think, means that while someone who values Si would percieve the physical dynamics of a relationship as it moves along (and can be objective in determining what harm a person continues to do), an Ni-valuer will percieve subjective, emotional changes of the opposing person through actions that person does as symbols, which may or may not be correct.
INFj's use Si, so they can forgive, I think, more easily during periods of lulled aggression.