A function stack is not a static list — it has characteristic ways of going wrong, and they have names. Two of them, the loop and the grip, account for most of what people mean when they say someone "isn't themselves". The rest are slower: the shadow half arriving uninvited, a stack trained against its own grain, an inferior function that spends thirty years ambushing you and then becomes the direction you grow in.
Each entry below is tagged with where it comes from. That is not decoration: these ideas span Jung's own writing, the Myers tradition, two bodies of clinical work, and a fair amount of internet folk theory, and they do not all deserve the same confidence.
start here · your own stack
Everything on this page is relative to a particular stack. Choose one and the examples below become that type's own — its loop, its grip, and the four shadow positions it runs when pushed.
Positions 1–4 are the conscious stack; 5–8 are the same four functions with their attitude flipped — Beebe's shadow half. Hover any position for what that archetype does.
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Way out: …
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Way out: rest, until the dominant comes back online. The grip is not argued out of — the function that would do the arguing is the one that is offline.
one · the two everyone means
They get confused constantly, and they are close to opposites. A loop is the stack folding in on itself and becoming more like the person; a grip is the stack running out and briefly becoming its own inverse.
two · the machinery underneath
The grip is not a bug that Jung noticed and named. It falls out of a more general claim about how the psyche regulates itself — one that predicts the eruption before typology gets involved.
three · the shadow register
Beebe's model runs all eight functions, not four: positions 5–8 are the conscious stack with the attitude flipped, and each carries an archetype rather than merely being a weaker copy. This is the register the site's stack rail calls "below the waterline".
four · the slow ones
Loops and grips are weather. These are climate — they operate across decades, and they change what the same four letters mean at 19 and at 55.
five · the underlying pairs
Functions do not come as a list of eight. They come as four opposed pairs, and a great deal of what feels like indecision is really both ends of one axis pulling at once.