This is really interesting, but how doyou define a
one-dimensional line, in conjunction with a 3-Dimensional observer?..a 3-D anything cannot be emmbedded on to a 1-Dimenstional "anything" or more specific a 1-D line? There is a dimensiuonal gap between a 1-D anything and a 3-D anything, it is a 2-D area. This happens to exist at the finite boundary of all 3-D objects, a three dimensional observer would only be able to detect 2-D field signals?
You can think of a perfect vacuum as a 1-D location, anything enetering this vacuum would then transmit field energies, and this can support 3-D matter only externally? the Universe cannot and is most definatly not a "brain", with our brains contained within. Conscious brains are not being created by an higher conscious "universeal" brain?...the factor of dimensionality provides limits, if what you interestingly state (the overall picture that is), then a Proton could well exist within an Electron, form the protons perspective it only regesters the existence of the 2-d electron field, which happens, from a further out observers point of observation, to totally surround the proton?
There is dimensional time constraints,I am afraid you have failed to incrporate, consciously I can observe the dimensionality of where I exist, this is basic relativity, but nature in no way allows me to access to certain higher or lower dimensions.