Five sense of self
Sense of self should primarily be a gut object. But a five’s sos is probably wired in the scientific method of negative evidence. You have a theory and experiments validate its accuracy. When you find negative evidence it calls for either validity of experiment or accuracy of theory. I think when a five is rooted in instinctual eight, sos has reached a state of an accepted theory, e.g. laws in physics or theory that speed of light is constant.
If you get an istp 5 then you have extra fluidity i think. Or any type with ti-ni process. Basically ti-ni leads you to question the current sos framework. Without more se, i suspect a cyclical break-make process which the ti enjoys anyway because it is able to engage with the system. This may or may not be mental gymnastics.
This might contribute to less time of the framework existing on 8 land.
