I thought it would be fun to start a discussion of the SiNe cognitive function spectrum. So since I come from the land of Fi, I will start with my take on how the system works. Then if anyone has things to add or questions or pretty pictures to show, they can post as desired.
Some key things to start off with:
1- The present is an overwhelming set of information that often doesn't make much sense until it's in the past.
2- The past then is more "alive" to us than the present is because it is more understandable and finite.
3- SiNe is like an interlocking web of data with data points (Si) and endless branching off connection points (Ne) going all over the place.
1- We can be "blind" to the present moment and implications of actions that lay therein simply because there is too much going on.
2- We can overlay and interweave past experiences with current experiences as a means of understanding the current experience, but ultimately miss out on the current experience.
3- We can make assumptions based on false information that can cause a bad iteration throughout the system.
4- There can be a tendency to descend into "what happened is what should then happen in the future."
I find that the present moment represents way too much information that I don't know what to do with most of the time. I get by as best I can by guessing as to what is important/pertinent to the moment based on past experiences of priority lists. Completely new experiences where I have nothing in the past to draw from, are terrifying at times and can be paralyzing. There is simply too much going on via the senses, what is being said, and what is being experienced. It's difficult to figure out what is needed in this moment. It's only when one has the distance and detachment that time can give, that things start assembling into a reasonable order.
The gift then is that when one can study what happened, that patterns and ideas can emerge and ultimately an understanding of what occured. There is a sense that the past is finite and from that an infinite realm of possibilities and connections can be created.
I think this is where a need for repetition can come into play. I enjoy reading books several times and seeing movies several times in order to extract all of the information I need/want out of it. The first pass is the most confusing because there is a lot going on and I am not always confident I know what elements to be focusing in on. A later read has relieved me of the burden of constantly wondering what is going to happen, and instead allows me to enjoy what is going on. Then I can think about how the elements work together, what patterns I see, hidden connections, etc. I often get frustrated/annoyed when major events occur that shut down the current range of possibilities. I am not immediately appreciative of what new possibilities have now sprung forth from these actions until some time has elapsed. For example, in the "Game of Thrones" series, major characters die a lot. The first big death completely ticked me off because I hadn't seen it coming, and I didn't see why that person had to die, and I was completely emo. I first reread the prior 100 pages or so out of a desire to see what I had missed the first time, and it wasn't until a good book or two later that I truly understood why that character died and what new possibilities had followed their death. That information was just not understandable for me to get in the moment. Now that I have learned about this, I am more aware of when major events happen, and I can encourage myself to try and see the situation for what it is. But this is not my natural thought pattern and is not easily available and it isn't necessarily trusted... yet.
I think repetition can help be the bridge from Si to Se in a strange sort of way. This past summer I went white water rafting for the first time and it was a new spur of the moment idea. I was traveling to a region where it was an option and I decided on a "near whim of the moment" that I was going to do it. However, the idea of just doing this with no prior knowledge was too much, and so I spent a few hours researching the topic. Having this kind of knowledge ahead of time gave me the prep I needed in order to feel much more confident that I wouldn't be overwhelmed by this experience. It especially helped getting through the first set of rapids and understanding that A: I wasn't going to die, and B: It felt really fun. I surprised myself by how much I enjoyed it, and I look forward to doing it again in the future.
I see issues that crop up in myself and other Si-users where the past is used to explain the present, without really seeing what the present is offering. A similar situation occurs to one that happened in the past, and that can trigger the manifestation of those data points and branching paths to overlay onto the current situation. This can be used for both positive and negative situations. The issue of doing this that isn't immediately obvious is that the situation isn't being looked at for its own unique set of reality points. This can occur a lot in interpersonal relationships and cause issues.
I have a lot more I could say, but my mind is branching out all over the place now. I'll stop here for now and see what others have to say.