The Nature of Humans 17.
The Space Needed for One Human Brain in the Observable Universe.
Question
If a human brain could become the same density of atoms per cubic metre as the observable universe what volume would that human brain occupy and how many human brains would fit into the observable universe at that same atomic density ?
Observable Universe
The volume of the observable universe is 4e+80 m3
Source: https://en.wikipedia.org/wiki/Observable_universe
Normal Matter
The observable universe has a 4e+80 atoms in it.
Source: https://en.wikipedia.org/wiki/Shannon_number
Source: https://www.quora.com/How-many-particles-are-there-in-the-universe
This allows for the observable universe to have 1 atom per m3.
Source: https://en.wikipedia.org/wiki/Outer_space
Dark Matter and Dark Energy
According to the standard model of cosmology the total mass–energy of the universe contains
4.9% ordinary matter, 26.8% dark matter, 68.3% dark energy
Source: https://en.wikipedia.org/wiki/Dark_matter
However the nature or amount of dark matter and dark energy is unknown and so only the normal matter is considered in this essay.
Human Brain
The mass of the human brain is 1.4 kg
Source: hypertextbook.com/facts/2003/RachelScottRosenbluth.shtml
The density of the human brain is 1111 kg/m3
The volume of a human brain is 0.00126 m3
Source: https://en.wikipedia.org/wiki/Human_brain
This is 1/794 of a cubic metre.
The number of atoms in a human brain is 1.35e+26
Source: https://www.quora.com/How-many-atoms-are-in-the-human-brain
The number of atoms in a cubic metre of brain is 1.35e+26 x 794.
Therefore at the same volume scale as the observable universe this allows for a human brain to have 1.0719e+29 atoms per m3.
Conclusion
The volume of the observable universe at 4e+80 m3 can accommodate 1 atom per m3.
The equivalent; 1 m3; volume of a human brain accommodates 1.0719e+29 atoms per m3.
Therefore the existing observable universe could not contain 1 human brain at the same atomic density.
To accommodate the current population of the Earth; 7,000,000,000 the existing the universe would have to be 7.5033e+38 times larger than it is to accommodate all of the human brains at the same density of atoms; 1 atom per m3.
These conclusions lead to several further issues.
The observable universe is a depletion system. It is trying to reach a zero energy, stable density, level by allowing interaction at an energy, sub-atomic and atomic level.
The universe is variable in energy and atomic density to allow humans to exist. There are therefore limited locations where the energy, atomic density, can evolve to a life form density level and have sufficient environment, energy and resources around it to perpetuate the life at the same density levels indefinitely.
Humans have limited environment, energy and resources around them that will decrease exponentially as their population increases.
If humans venture into space and colonize other planets the depletion problem will repeat itself.
If humans solve the problem of travel through the enormous distances of space to other planets then they will encounter the relative time problem. Any planet they reach will have evolved at the same rate as the Earth and consequently will have a limited time in which to exist to allow humans to exist on it and mine it for resources.
Humans are destined to be hunter gatherers in the universe.
Wherever they go they are destined to exist on limited environment, resources and energy in a depletion condition.
They are a part of the depletion system; the singularity, expanding singularity, observable universe; trying to get to a zero energy, stable density, level.
Ian K Whittaker
My websites:
https://sites.google.com/site/architecturearticles
Email: iankwhittaker@gmail.com
07/12/2016
14/10/2020
584 words over 2 pages