If space is indeed infinite it must be so in all dimensions, including size. So just as our universe is a proton in a larger molecule, then we must also look at the micro perspective. In such an infinite universe there can be no smallest particle. So the search for the quark or the graviton or whatever the hypothetical smallest particle is this week, is pointless, because no such "smallest" entity exists. You can not mathematically divide something into nothing. 1 divided in half an infinite number of times, will never be zero...everything is made of something. So while it would be comforting to finalize that atoms are the smallest particle, we know that atoms...the physical walls of atoms are made of a material...last time I was in physics class they called that material quarks...but what are quarks made of? Keep dividing and you will never reach zero. Einstein speculated that matter is energy condensed to a slow vibration. That energy could be the life force and kinetic energy from the countless galaxies that would make up your cells. The very nature of reality shifts when you take this perspective. A week of binge drinking does more than just destroy your brain cells, you decimate billions of galaxies!
Then I my mind began drawing other associations like the yogi masters. They claim to astrally project their consciousness to different planes of existence, but what if these planes are just size increments? It would make sense that the beings encountered would be far superior to human beings, because they would have the power of all the multiverses within us and our universe and it's counter parts. The possibilities and implications are practically endless.
I know this seems a little strange, and I didn't answer the child with all of this non-sense ( i believe I said there was blackness, then more stars, then santa clause's stronghold....