Part 6/9:
This discovery has led to the development of the holographic principle, a profound idea positing that the description of a volume of space can be encoded on the boundary of that space. Simply put, it suggests that our perception of a three-dimensional universe may fundamentally be a two-dimensional hologram, with gravity acting as a factor that modifies this gauge. Instead of volume dictating information capacity, it is the boundary that plays a bigger role.
The holographic principle has sparked further theoretical exploration, yielding concepts such as the AdS/CFT correspondence—the idea that a theory of gravity could be equivalent to a corresponding field theory without gravity in one fewer dimension.