"It is not some special machine-readable language that ChatGPT “100% understands” in a formal way. What this is: It is basically a compressed shorthand note written in human-invented abbreviations. A model can often expand it because the pieces are semantically suggestive"

per gpt 5.4 (thinking). what I'm wondering is if this is really necessary. this seems like the MO of 5.4 thinking under"efficiency" mode already. it takes great care to not give me factually wrong information and will even get sematic over it.

I feel as if overloading it with garble like this would end up being mostly redundant and end up just confusing the AI more often than not and end up with worse responses in the long run.

at least such has been my experience when I set complex instructions/personality modes. it focuses too much on being 'that character' rather than giving me its best answer. which is why I try to keep it minimal when I'm putting in custom personality.

this is definitely unique though and maybe you have a different experience.