This vertical view of Flatland belies the fact that these two sets of yellow lines are in separate Flatland universes. In the three-dimensional world these lines are on two different steps of a staircase. The yellow lines on the left are on a step higher than the ones on the right.
Are there parallel universes in the 3_D world?
Parallel Yellow Lines in Parallel Flatland Universes
Photo
There is certainly more than one. I think they bump into one another too often to be parallel. (K)
Not even counting those nonparallel, intersecting planes!
all around us!
Indeed!