Is it possible that the universe in its entirety is discrete rather than continuous?

Question

Since electric charge is comprised of discrete units and and mass is formed by discrete units is it possible that space-time itself is discrete as well?

Answer 1

Electric charge is discrete, however mass and energy aren't. They're entirely described through quantum mechanics. In fact, most phenomena at the quantum level can be described as a wave function which specifies its location as a continuous probability. So if you were to describe the universe in one word, it would be quantum not discrete.