Si is about moderation, practicality, common sense, skills, internal experience, physical sensations, psychological well being.
4DSi is about the experince of sensations
in detail. It's
physical. The internal experience of the physical world, like hunger, thirst, cold, pain, fatigue, sleep, etc...
and the
psychological discomfort or pleasantness that physical experience creates.
Si is about
common sense too.What is physically possible and what is not. What will hurt you, what is viable, what would be risky…
Si is not about being picky on food, is about eating healthy naturally (not based in previous teachings but experience), knowing what is healthy/unhealthy. Si is about developing practical skills, is about being hands on and being enoughly aware/sensible to become fascinated through 5 senses and involve into experience.
Is being highly aware of 5 senses and how the external world affects the individual experience.
That's why I'm uncomfortable with ppl being mistyped and intuitives messing with stuff that they don't fully understand and spreading wrong cliches and false information.