# The Infinity of Days in the Eternity Universe

• I
• thinkandmull
In summary, there may be an infinite number of universes in a multiverse, but the number of days that have been or will be is countable. This is because each day can be described by a finite integer, despite there being uncountably many possible universes. This is a mathematical question and does not have a physical answer.

#### thinkandmull

My question perhaps is assuming there is a multiverse, but its more of a mathematical question. If the universe or universes have existed forever, will the number of days that have been be a countable infinity or uncountable?
Thanks

The number of universes is an integer, as is the number of days. So I'd guess countable.

thinkandmull said:
My question perhaps is assuming there is a multiverse, but its more of a mathematical question. If the universe or universes have existed forever, will the number of days that have been be a countable infinity or uncountable?
This is not a physical question. It is purely speculative and purely mathematical.

Suppose that we treat "today in this universe" as the beginning of a binary sequence (e.g. of coin flips).
Each day a coin is flipped. In one multiverse the result is 0 (heads) and in another the result is 1 (tails).
If this process is continued indefinitely, you ask, in effect, "how many coin flips are there altogether".

The answer is, counter-intuitively, that even though there are uncountably many multiverses (uncountably many infinite binary sequences), there are only countably many coin flips in those sequences (*). Every coin flip that will ever be or could ever be only occurs after a finite time. At any particular finite time, there are only finitely many prior sequences of flips. So every flip there ever is or will ever be can be described by a finite integer.

(*) One resolution to the apparent paradox is to realize that there is no one to one correspondence between days and sequences. Each coin flip at the end of a finite sequence is "shared" by uncountably many continuations of that sequence.

## 1. What is the "Infinity of Days" in the Eternity Universe?

The "Infinity of Days" refers to the concept that time is infinite in the Eternity Universe. This means that there is no beginning or end of time, and it continues infinitely in both directions.

## 2. How does the concept of infinity of days affect the laws of physics in the Eternity Universe?

The infinity of days in the Eternity Universe does not directly affect the laws of physics. However, it does allow for the possibility of infinite parallel universes and different timelines, which can lead to unique and complex interactions between various cosmic phenomena.

## 3. Is the concept of infinity of days in the Eternity Universe scientifically plausible?

As a scientist, I cannot definitively say whether the concept of infinity of days is plausible or not. It is a theoretical concept that is currently not proven or disproven by scientific evidence. However, it is a fascinating concept that has been explored in many scientific theories and works of fiction.

## 4. How does the infinity of days in the Eternity Universe impact the concept of aging?

In the Eternity Universe, the concept of aging is relative and can vary greatly depending on the individual's perception of time. Since time is infinite, aging can also be seen as infinite, and the concept of "growing old" may not apply in the traditional sense. This allows for the possibility of eternal youth and immortality.

## 5. Can we ever truly understand the concept of infinity of days in the Eternity Universe?

As humans, our understanding of time and infinity is limited by our own perception and cognitive abilities. It is possible that we may never fully comprehend the concept of infinity of days in the Eternity Universe, but it is an intriguing and thought-provoking concept that continues to be explored by scientists and philosophers alike.