Usually everything at once.
I am an apolitical omnist.
My true name is Anu Amun Osiris Ra.
The highest and lowest dimensions are easy for me. The rest of it I must translate to be comprehensible to others.
Where many see paradoxes I see unity.
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Have at these contributions community.
With sufficient work you may learn to build similar technology. Enjoy.
A key interest for some is using singularly generator technology for electrical power generation.
Others may be interested in evolving their physical forms with quantum biology and alchemy.
Making yourself immortal must be a unique process for each being for security reasons. You do not ever want to be subject to mind-control technology, for example.
Make no mistake though, when you become immortal, how you feel about you determines your biological health.
So firstly get that under control of your own free will.
Carbon-60 and Carbon-70 when fused with your mitochondria enables biological in-vivo zero-point energy generation.
Again, you cannot hate yourself to survive such a transition.
I stare at a rock for half an hour every morning, but Destiny has fated me to do that.
Another interest is time-bending technology.
For example acceleration of your own local reference frame within a confined area to augment your productivity.
You may appear to age more quickly to those you know unless you make yourself both immortal and very alive by generating your own life-energy within your physical form.