To me it's a classic Icarus and his wings scenario. Mania can do borderline impossible things imo, but if you "give in" too much, or like stop trying to check yourself and go back to the "normal" feeling of reality, it can be intensely dangerous. I remember my worst mania, first couple times, I thought I had the capability of writing an encyclopedia, from scratch, I think I wrote like 70 something pages, in Word, in ~4 hours one night when I didn't sleep at all. I was trying to hook up with people and sleep with them, when in reality I should've NEVER been doing that. Caution and level headedness be damned. There was a point where I swear to god I lost my fear of the concept of death. I still think the act of dying is pretty scary, but came to terms, organically that whatever is after that post-dying threshold, wasn't scary. At all. It sounded kind of nice. Like a quiet place. Needless to say, that's NOT healthy, or safe. Combine with not eating, sleeping etc... I swear I even hallucinated audio noises at times. They had to dose me with some heavy sedatives to get me to sleep in the hospital, and that's after I made like 4 nurses, and one provider/doctor either cry or tear up in the intake trauma room or whatever. Absolutely wild ride. I sometimes feel like I could tactically "use" BPD to achieve some desired outcome but I've watched enough black mirror to know that everything has a cost, and everything can go so.... So wrong.