Here's my take on the functions as I think they express themselves in me. Don't expect it to apply to all SEIs. and please be gentle in criticism!! I'll be much more responsive if you are Just see it as an attempt to make sense of my own type. Hopefully at least some of it will be spot on. It's not really comprehensive. I think a lot of other things could be added, and I'm open to suggestion.
Brings practical knowledge to the table. Knows how systems respond to various inputs, outputs, and stresses. Math equations produce an output based on the variables, the constants, and the operations involved. Paintings can produce a response based on the color, texture, and medium. Speaking to someone can deliver a different message depending on the speaker's intonation, volume, and body language. ISFps attain a mastery of subtleties that can make a good thing great, or bring a lost cause back to life with a few simple touch-ups.
ISFps tend to thrive in a light hearted environment. Heavy moments are not created by this type, but they are not necessarily avoided. Takes pains to ensure that others feel welcome and unafraid. Seeing happiness in others allows them to relax and open up. Does not tolerate disturbances of the emotional harmony they work so hard to create.
ISFps tend to worry about their course in life. In the absence of things that grab their attention, may look for outside guidance in choosing a long term goal--serving the interests of their parents or society rather than their own. Long term planning is done, but it is always open for revision.
Can tolerate a nice, yet incompetent person, but never a rude, yet skillful one. Unable to see people as resources to be managed. Does not value efficiency at the cost of humanity. Does not always choose sources of information wisely, as ISFps are always willing to listen, and will not disregard anyone known to be untrustworthy. Easily becomes overwhelmed when many, seemingly unrelated, facts are present.
A lot is happening in the world all around us, and being a master of subtleties produces a certain vulnerability to the constant deluge of information we all get every day. The constant scanning, parsing, and analyzing of Ne types protects the ISFp from being overwhelmed by it all. Ne types bring forth a wealth of valuable, connected information in a manner that allows the ISFp to refine and expand upon it.
With the seeming inability to remember miscellaneous factoids, ISFps attempt to compensate by learning how to think certain ways. It's impossible to learn everything about the universe, so it's better to learn how the universe works. Overly complex theories and ideas put the ISFp to sleep (), so assistance in reducing the complexity and size of ideas is greatly appreciated.
Does not prefer to become pushy or forceful with anyone. Always saves that as a last resort and will at first try to be gracious and kind. However, ISFps have been known to become consumed with rage when pushed too far.
Always courteous and politically correct, but does not enjoy the sort of restrictions that come with it. Welcomes a break from following social rules if the situation allows for it.