One theory I have on the Subject of Human Immortality deals with the creation of an Artificial Dwarf Planet with many layers of Balanced Ecosystems supporting the Life of one Person at the Center.
This is partially inspired by the character of “Ego” from Guardians of the Galaxy 2. However, Ego was an Emergent Phenomenon, whereas this is a Purposeful Design.
There is a finite amount of Resources that can keep one healthy and happy to the most optimized level. This is where Automation comes in.
One benefit of Automated Robot Labor is that scaling work no longer involves Humans, and can therefore grow to Cosmological Scales rather quickly.
Considering all the forces keeping you Alive and Happy in the Center of this Artificial Dwarf Planet are running at Stacked Efficiency Percentages, any problems should be corrected before they even become noticeable.
Your Body is Synthetically Regenerated. You age because the Cellular Regeneration Process breaks down. This System takes over, and you get a brand new body every decade or so, without being transferred. It happens so slowly that you don’t even notice.
Given a Space Internet of Communication Satellites, there could be a Metaverse for these Dwarf Planet Immortals to inhabit, so we could build an Immortal Society.
Nothing can hurt you, cause you pain, and there’s no longer a way for you to die. There is just too much stuff in the way between you and any antagonistic forces that may cause you harm.
Your Dwarf Planet has an Automated Space Military Force, and they won’t let anyone in.
“Who are you? This isn’t a landing zone. It's a person. If you wish to converse with this person, do so through the proper network channels, otherwise, you have 1 hour to depart, or we will make you.”
This especially applied to Mind Uploading into Synthetic Bodies.
Here is a Scenario.
You upload yourself from your Dwarf Planet to an Android Body on Mars.
This body can be destroyed in a War.
You wake up back in your Dwarf Planet.
You never really went anywhere.
Quantum Internet has the benefit of warping the Universe so that distance between Network Nodes no longer matters.
You can have no-lag High Speed Internet for as far as you can Spread your Quantum Internet Satellites.
Hook one up to a Solar Sail and send it flying into space. Solar Sails don’t slow down. There is nothing to slow them down, but the solar wind will only pull the craft faster.
In my opinion, if you use this method for Space Travel, or Quantum Internet Satellite Deployment, the craft will need many such Solar Sails as a Consumed Resource. When the speed gets to be too much for the craft, the Solar Sail will need to be cut.
The speed will stop advancing so rapidly, but reverse boosters may need to be applied to get it stabilized.You especially want this if you’ve made it to your destination. Braking is difficult in Space. You need an Elaborate System to attempt it.
You, as an Immortal, have Eternal Tuition at an Ivy League Level University in this Immortal Metaverse.
It's not your Job to Work. You grow here, forever, because the journey of development is unending, and 100 years or so is not even enough time to properly grow in experience compared to this kind of environment,
Whether or not your growth produces anything is inconsequential. You aren’t working to live. Systems you may build can grow at Cosmological Scales because they are Automated.
Your Experience as a Sentient Being is given all needs and wants as a given. Live. Live for 100 Trillion Years.