Hello, I have recently been very interested in learning about the 4th dimension (well the little we know about it) I have listened and discussed in some conversations about the topic and have a few thoughts and it questions. -From my understanding the Tesseract is a 3rd dimensional Shadow depiction of a 4th dimensional cube. -Also just how a series of squares make up a Cube, and a series of cubes make up a Tesseract. -Here is more of what I am thinking and please help correct me or elaborate on this, but 4th dimensional creatures or objects emit 3 dimensional shadows.... Ex: if there was a 4D apple, the shadow of that 4D object will create a 3D apple. (what we see in our world) is this valid because our 3D selves cast a 2D shadow.... On a 2d plane. -is this valid? -Also I know many people say that the 4th dimension is just time... But I am referring to a 4th Dimensional Spacial realm. If it is time that makes up the 4D please Elaborate.. Thank you.