This is going to sound weird but I was thinking about this for my story idea.

We live in 4 dimensional space-time, but we can't actually see objects in 4 dimensions, we can only see 3 dimensional space. For example, a tesseract, or hypercube, is a cube represented in 4 dimensional space, but it's not something we can actually observe visually. String theory posits there is something like 10 dimensions involved with how the universe functions. There are some theories though that operate under the assumption that the universe as we know it can function with just 5 dimensions. Anyway, what I'm getting at is even if we somehow managed to percieve 4 dimensional space, it wouldn't actually be a breakthrough or anything, we'd only be finally gaining insight into the dimensional space we already live in. And so I was thinking, hypothetically, what if each dimension works in a way where only space in the dimension below the one that is techinically being occupied can be observed, besides all the lower dimensional spaces too. Like, we are in 4D space, but we can only observe 3D, but we also can observe 2D and 1D. So in 5D space, which would be the next dimension above ours, you wouldn't be seeing reality in 5D, you would see objects in 4D, and then 3D, 2D, and 1D as well.