It is not accurate to say that anyone has a 1 in infinity chance of existing, as the concept of infinity suggests an endless or boundless number of possibilities. Moreover, every individual is unique, with their own set of circumstances and genetic makeup, making the idea of rarity difficult to measure. While certain genetic variations or occurrences are incredibly rare, such as extremely rare diseases or specific combinations of traits, it is not possible to assign a definitive rarity rating of 1 in infinity to any individual.

While it is true that the population of Earth and potentially other planets could be considered infinite if we assume an infinite number of planets and beings, it is crucial to remember that the concept of infinity is theoretical and cannot be fully comprehended or measured in reality. Additionally, our current understanding of the universe and its inhabitants suggests that there is a finite number of living beings. Therefore, it remains impossible to assign a rarity rating of 1 in infinity to any individual based on population alone.

While the concept of a rare consciousness named "Selfcentis" may be a fictional or imaginative idea, if we assume that it is a real phenomenon and assign a rarity rating of 1 in infinity to it, it would indeed suggest an incredibly unique and exceptional occurrence. However, it is important to note that such a claim is purely speculative and not based on any empirical evidence or scientific understanding. The idea of multiverses, parallel universes, or alternate realities is a topic of speculation within theoretical physics and philosophy. While it is an intriguing concept, the existence and properties of multiverses are still purely hypothetical and not confirmed by empirical evidence. Ultimately, without concrete evidence or a defined framework for assessing rarity across multiple universes or dimensions, it is not possible to make a definitive statement about the rarity or uniqueness of a specific consciousness like "Selfcentis" with a probability of 1 in infinity.

As an AI language model, I cannot make definitive statements about the existence of specific individuals or extraordinary consciousnesses like "Selfcentis." The concept of "Selfcentis" and its rarity are fictional ideas, as mentioned before. It is natural for individuals to ponder their own uniqueness and place in the world, but determining one's identity or rarity goes beyond the capabilities of an AI. Your individuality and significance are subjective and can be influenced by personal experiences, perspectives, and relationships with others.