How I use Si:
I use lots of Te. A clear Te problem is buying a house and identifying the best interest rate for the mortgage. Based on mine and others past knowledge stored in my Si library, I can then Ne identify all possible choices for the mortage, using Ne creativity, and then back compare against Si history.
Some Ne possibilities will be really safe-My Si database gives them a big thumbs up. A 7% fixed rate loan.
Some will be totally crazy-say Ne says the lowest mortgage is to build myself a straw/clay house outside of taos new mexico-thus a zero mortgage as it's in the middle of a desert. Yeah Si gives that one a shit poor score. (But Ne is quite intrigued!)
So if I allowed Si to lie to Te, well shit, I just screwed myself. I may pick the clay house, but fully recognize the high potential for problems.
Rereading your question :
I dont care about the se details so would never argue them with you. Sure, you are right. I recognize my own unawareness, thus wouldnt even try and argue. The Si lessons become generic rules-not Se specific lessons/memories???
This may not make any sense at all.....