Do we have copies in the universe?

Albert Einstein's enduring legacy stems from revolutionary contributions to physics and a profound humanist philosophy. His scientific career, highlighted by the Nobel Prize-winning work on the Photoelectric Effect and the foundational principles of the General Theory of Relativity (including the famous mass-energy equivalence, E=mc2), redefined our understanding of space, time, and gravity in the ever-expanding universe. Beyond his celebrated formulas, Einstein's personal letters reveal a commitment to humanity and friendship over fame - an outlook that forms the core of his inspirational power. While he was not focused on concepts like the multiverse, his lifelong, though ultimately incomplete, quest for a unified field theory continues to motivate modern physicists exploring concepts like quantum gravity and the origins of the Big Bang from quantum fluctuations. At the quantum level - the world of atoms and subatomic particles- the rules of classical physics break down. Particles exhibit unusual movements and structures entirely unlike what we observe in our everyday world, predicting a reality where multiple universes may exist, moving far beyond the scope of traditional physics.

There are many theories including my own beliefs earlier, that we live in a universe within a universe, or our universe existed as an ancestor of a previous older universe. What is more, the theory of Multiverses is now more lively, not only with Brian Greene 9 universe models, but also with other scientists exploring this idea of a never ending universe.

In this essence, I have read a question - are there another copies of Einstein if the multiverse is real. This made me think of each and everyone of us. Many times we see people looking alike, could they be copies of each other or carried similar ancestor genes?

Certainly there cannot be other copies of a once in a billon years mind. Which leads us to the beautiful idea that same as Earth with its 1% oxygen is unique, so we are as humans and so is our Milky Way (we no do have a copy of the Milky Way in the observable universe among 2 trillion other galaxies) and we think as well our galaxy.

Why is Einstein so unique, in unison with the universe?

The way things move in the universe and are created, no two object are alike, expect of the ground elements, even we are made of. To have clonings is more like a science fiction movie, which could be exciting, but does not depict close to reality.

We might carry similar genes as our relatives' copies, but they are never the same exact copies. There is a fundamental principle part of quantum mechanics which propels that there cannot be two identical universes as part of the no - cloning theorems.

This theorem states that it's impossible to create an independent and identical copy of an arbitrary unknown quantum state (ψ). Since the entire universe is made up of a vast collection of quantum states, an absolutely identical copy of the universe would require cloning all of them, which is forbidden by the fundamental laws of quantum physics.

In addition, those fundamental principles are set from the very beginning of our universe where all of the quantum fluctuations gave rise to the beignning and every structure including galaxies in the observable universe was part of a statistical quantity, even if there exist another universe with the same natural laws, there will be a different unique set of quantum fluctuations, leading to an entirely different set of stars, planets, matter.

There are still some speculations derived from the theory of an infinite universes which write of exact human copies of us somewhere else, but I will question this using the above fundamnetal principles. Even identical twins are not exact same copies because they are created from a single zygote that splits, but with minor differences arising from genetic mutations and environmental factors after the split. While they start with nearly identical DNA, they will have unique genetic variations and, as they grow, their individual experiences and environments cause further distinctions. 

Even if two stars start alike, their destiny in intertwined to give them special forms, features, compositions. The future of gene modifications is speculated to give people the freedom to enhance their own genes or the ones of their children. But even now it is possible using the current advancements in longevity and epigenetics where we can influence or reverse modifications due to epigenetics factors.. Further in the future, we might experience technological advancements to alter the human genoms and create better versions of humans. Today, the CRISPR technology is used in multiple fields, including food, biology, agriculture and fighting diseases. The methods to be used for human genomic altering are still highly speculative.

Same as it is impossible for two bodies to exists or have originated at the same time and in the same place, it is hardly possible for two identical copies of ourselves to be present in the universe. We know that life must exists in some form in other habitable planets and we expect them to be highly different. What if they are already sending signal to Earth, but are so unique that we are not able to recognise them?

Science - Fiction illustration