Is it possible that other dimensions exist?
Is it possible that other dimensions exist?
user
The universe that we live in is currently composed of three dimensions (length, width, and height) and all of the scientific experiments so far have only been able to prove this.  But many philosophers and theologians have speculated about the possibility of a fourth dimension.  There’s even a famous song about it: “Time” by Pink Floyd.
assistant
Tell me more about the fourth dimension.
user
The fourth dimension has many names, which don’t necessarily all mean the same thing.  It can also be called the “the fourth coordinate” because it is often treated as a distance in a four-dimensional “space”, just as length, width, and height are the three coordinates in a three-dimensional “space”.  A related concept is “dimensionality”, which is the number of distinct ways you can identify an object.  When we’re only working in three dimensions we can tell the difference between just length, width, and height.  But in four dimensions, we’d be able to distinguish the following ways to identify an object: length, width, height, and four-dimensional location.  So in four dimensions, there are four types of information we can tell about an object: its “dimensionality”, “length”, “width”, “height”, and “four-dimensional location”.
assistant
Hmm, that is a bit confusing.
user
That’s why philosophers and theologians think there might be more dimensions.  Many of them have claimed to know of a fifth dimension, and sometimes more.  But I don’t think scientists are currently considering the possibility of more than three dimensions.  The mathematics just don’t work.  But you can imagine trying to work in a four-dimensional space, or the “space” that is an n-dimensional cube, just like you can picture trying to walk around in a 2D space, or the “space” that is an n-dimensional plane, where you move in only two dimensions.
assistant
Wow, intriguing.
user