In his book “A Brief History of Time” Stephen Hawking describes how in Euclidean space-time there is no difference between the directions of time and the directions of space.
The theoretical consequences of this mathematical concept imply that freedom of travel of light and for the transmission of energy or information applies to all directions in space-time. Any event therefore, originating in a particular point at a particular moment, will unfold histories from that point and from that moment on into each and every direction.
However, the concepts of gravitational fields, electromagnetic fields, quantum/Higgs fields and strings incorporated in space-times with 10, 11 or 26 dimensions imply limitations to the freedom of travel of light and for the transmission of energy or information in space-time.
The question is whether these limitations are justified by each or any combination of these diverse concepts.
As explained in various previous posts, the limitations in question seem to be unjustified for reasons of several incompatibilities with the current views:
1. When one turns on a light, the speed of light does not emerge, it is already present;
2. The speed of light is not constant;
3. Einstein’s Equivalence Principle does not take account of the difference between
endogenous and exogenous processes;
4. A singularity (a real Black Hole) is an impossibility;
5. A state of 0-entropy is an impossibility;
6. The consequences of the equality-inequality of gravitation and electromagnetic interaction.
My views on these subjects imply that there is no difference in space-time between the directions of time and the directions of space and that this equality of the directions of time and the directions of space is a fundamental property of the world.
It is for this basic reason that I think that physics and string theories are on wrong tracks.