If one now combines the basic ideas of general relativity and quantum mechanics, it follows immediately that since space is a field (the gravitational field) space must have a granular structure, as does the electromagnetic field. The quanta of the electromagnetic field are the photons. The quanta of the gravitational field must be “grains of space”, because the gravitational field is the physical space. The dynamics of these grains must be probabilistic. Hence space (i.e. the gravitational field) must be described as “clouds of probability of grains of space”.
